ASTROSAT CZTI

Data Quality Report

Orbit 34437

Creation date: 2022-02-09T22:53:39.585469
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/AS1A10_058T05_9000004918_34437cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34437cztM0_level2_quad_clean.evt
Size (bytes)551,154,24065,744,640
Size525.6 MB 62.7 MB
Events in quadrant A2,681,421439,006
Events in quadrant B3,919,469440,373
Events in quadrant C2,859,599423,754
Events in quadrant D6,895,653339,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109542
B0148041
C0114651
D0239951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4955330.665994%
B495552710.635721%
C4955310.625631%
D4955112522.704339%

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 7078 4956 25 25 0.35% 0.50%
B 7078 4956 411 411 5.81% 8.29%
C 7078 4956 23 23 0.32% 0.46%
D 7078 4956 1042 1042 14.72% 21.03%

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 9 143 81045 611.56 665 655 131.5
A 10 83 26481 196.47 665 655 131.5
A 13 254 8546 60.03 665 655 131.5
B 5 172 1232358 10524.06 625 613 117.0
B 4 171 139022 1182.57 625 613 117.0
B 15 85 33562 281.52 625 613 117.0
C 15 214 206644 1420.78 637 644 145.0
C 0 10 115542 792.45 637 644 145.0
C 14 67 42707 290.11 637 644 145.0
D 10 118 2043420 14365.04 585 570 142.2
D 7 223 1171943 8236.93 585 570 142.2
D 8 195 1094235 7690.5 585 570 142.2

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