ASTROSAT CZTI

Data Quality Report

Orbit 35786

Creation date: 2022-05-12T12:20:14.585559
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/AS1A09_029T09_9000005138_35786cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35786cztM0_level2_quad_clean.evt
Size (bytes)281,520,00036,060,480
Size268.5 MB 34.4 MB
Events in quadrant A1,740,749216,703
Events in quadrant B2,250,748215,006
Events in quadrant C1,940,477209,952
Events in quadrant D2,349,815196,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074752
B090221
C079361
D094081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3569160.448305%
B35691163.250210%
C3569501.400953%
D35691845.155506%

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 5452 3570 12 12 0.22% 0.34%
B 5452 3570 80 80 1.47% 2.24%
C 5452 3570 52 52 0.95% 1.46%
D 5452 3570 185 185 3.39% 5.18%

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 10 83 92885 1090.44 410 401 84.8
A 15 237 52441 613.58 410 401 84.8
A 7 3 4747 51.24 410 401 84.8
B 5 172 362904 4611.29 405 395 78.6
B 5 255 116981 1483.03 405 395 78.6
B 4 232 52089 657.57 405 395 78.6
C 15 214 149787 1617.03 394 395 92.4
C 0 10 124031 1338.25 394 395 92.4
C 0 207 92116 992.8 394 395 92.4
D 2 250 372125 3873.13 388 376 96.0
D 7 223 158841 1650.99 388 376 96.0
D 10 118 50011 517.13 388 376 96.0

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