ASTROSAT CZTI

Data Quality Report

Orbit 57555

Creation date: 2026-05-18T19:04:21.774166
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_113T09_9000006574_57555cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57555cztM0_level2_quad_clean.evt
Size (bytes)501,727,68098,369,280
Size478.5 MB 93.8 MB
Events in quadrant A5,673,097635,013
Events in quadrant B3,743,186681,932
Events in quadrant C4,343,030612,821
Events in quadrant D4,289,836579,299

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382
B01382
C01382
D01382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021710206
B01593078
C01782577
D017655130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67363334.943587%
B67432693.989322%
C67442914.314947%
D67362393.548100%

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 7669 6743 338 338 4.41% 5.01%
B 7667 6752 161 161 2.10% 2.38%
C 7678 6753 199 199 2.59% 2.95%
D 7667 6745 170 170 2.22% 2.52%

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 3 14 2641283 14649.09 735 714 180.3
A 4 249 85301 469.26 735 714 180.3
A 3 245 57748 316.41 735 714 180.3
B 4 142 306189 1979.28 719 692 154.3
B 5 185 278370 1799.04 719 692 154.3
B 4 206 93640 602.2 719 692 154.3
C 15 224 1362360 7046.9 707 698 193.2
C 6 223 93295 479.21 707 698 193.2
C 12 254 79061 405.55 707 698 193.2
D 8 160 794176 3961.68 715 685 200.3
D 15 142 167462 832.67 715 685 200.3
D 2 252 115449 572.98 715 685 200.3

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