ASTROSAT CZTI

Data Quality Report

Orbit 20210923_T04_059T01_9000004704_level2

Creation date: 2021-09-28T17:12:57.728392
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T04_059T01_9000004704cztM0_level2_bc.evt modeM0/AS1T04_059T01_9000004704cztM0_level2_quad_clean.evt
Size (bytes)14,176,584,0002,478,130,560
Size13.2 GB 2.3 GB
Events in quadrant A43,567,34917,346,372
Events in quadrant B170,388,89615,267,389
Events in quadrant C115,132,55113,002,619
Events in quadrant D86,798,40815,840,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04173000
B08958020
C08016520
D05630180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03170
B03170
C03170
D03170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040420
B040420
C040420
D040420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19807925481.286355%
B1980634820124.336196%
C1980616025430.421941%
D198068101035.100773%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 248136 198104 52 52 0.02% 0.03%
B 248136 198083 429 429 0.17% 0.22%
C 248136 197867 5651 5651 2.28% 2.86%
D 248136 198086 1355 1355 0.55% 0.68%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 6 729086 304.33 10854 10685 2360.6
A 13 254 370080 152.25 10854 10685 2360.6
A 13 6 294848 120.38 10854 10685 2360.6
B 4 80 70481558 36295.85 9989 9755 1941.6
B 6 159 49585333 25533.44 9989 9755 1941.6
B 5 172 5299014 2724.18 9989 9755 1941.6
C 3 233 77764356 39695.98 8289 8274 1958.8
C 0 10 2919407 1486.19 8289 8274 1958.8
C 14 67 708845 357.66 8289 8274 1958.8
D 8 195 17049123 7165.61 10403 10086 2377.9
D 12 233 5924718 2487.34 10403 10086 2377.9
D 1 47 5919565 2485.18 10403 10086 2377.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter