ASTROSAT CZTI

Data Quality Report

Orbit 52295

Creation date: 2025-07-22T12:56:26.712215
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/AS1C09_011T05_9000006474_52295cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52295cztM0_level2_quad_clean.evt
Size (bytes)770,172,48077,423,040
Size734.5 MB 73.8 MB
Events in quadrant A4,256,553595,549
Events in quadrant B4,755,170638,857
Events in quadrant C13,411,699158,137
Events in quadrant D5,591,540506,482

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170271
B0185573
C0441941
D0209851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63762333.654329%
B63762473.873902%
C6376486576.301757%
D63766209.723965%

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 7391 6377 174 174 2.35% 2.73%
B 7391 6377 121 121 1.64% 1.90%
C 7390 6375 4398 4398 59.51% 68.99%
D 7391 6377 562 562 7.60% 8.81%

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 12 3 791815 4843.79 664 649 163.3
A 10 253 105873 644.22 664 649 163.3
A 12 194 98608 599.74 664 649 163.3
B 10 254 687674 5017.25 651 630 136.9
B 0 216 296433 2160.15 651 630 136.9
B 4 171 289028 2106.07 651 630 136.9
C 15 178 5944043 67147.36 315 312 88.5
C 15 158 1509463 17049.14 315 312 88.5
C 5 250 1457088 16457.45 315 312 88.5
D 15 93 1199276 6819.25 619 591 175.8
D 8 176 1196725 6804.73 619 591 175.8
D 7 96 152066 861.73 619 591 175.8

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