ASTROSAT CZTI

Data Quality Report

Orbit 53932

Creation date: 2025-09-16T23:30:16.616965
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/AS1A14_057T04_9000006508_53932cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53932cztM0_level2_quad_clean.evt
Size (bytes)773,303,04072,982,080
Size737.5 MB 69.6 MB
Events in quadrant A3,265,715598,716
Events in quadrant B4,044,951618,003
Events in quadrant C6,833,473453,888
Events in quadrant D13,997,420104,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142241
B0163791
C0247151
D0458813

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62271282.055564%
B62282874.608221%
C6228138422.222222%
D6227522383.876666%

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 7202 6228 105 105 1.46% 1.69%
B 7203 6229 161 161 2.24% 2.58%
C 7203 6229 1392 1392 19.33% 22.35%
D 7202 6228 4525 4525 62.83% 72.66%

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 10 253 240783 1449.15 666 647 165.7
A 15 174 180734 1086.77 666 647 165.7
A 0 8 79623 476.6 666 647 165.7
B 0 213 806684 5684.2 652 628 141.8
B 1 223 179868 1263.98 652 628 141.8
B 5 185 150224 1054.93 652 628 141.8
C 1 241 4040149 25234.86 575 569 160.1
C 12 252 171965 1070.69 575 569 160.1
C 13 3 166060 1033.81 575 569 160.1
D 8 176 9973911 119153.27 283 271 83.7
D 2 172 1312255 15674.04 283 271 83.7
D 10 172 583052 6962.38 283 271 83.7

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