ASTROSAT CZTI

Data Quality Report

Orbit 56207

Creation date: 2026-02-17T11:02:29.377572
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_083T04_9000006550_56207cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56207cztM0_level2_quad_clean.evt
Size (bytes)791,161,92091,710,720
Size754.5 MB 87.5 MB
Events in quadrant A10,715,766529,231
Events in quadrant B5,276,235666,309
Events in quadrant C5,273,069562,789
Events in quadrant D7,432,341488,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371371
B0210400
C0213510
D0275530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7612191725.183920%
B76133724.886379%
C76137319.601997%
D7613111514.646000%

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 7893 7887 1778 1778 22.53% 22.54%
B 7894 7894 223 223 2.82% 2.82%
C 7893 7893 548 548 6.94% 6.94%
D 7894 7818 1107 1107 14.02% 14.16%

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 7 64 2301283 12700.23 726 709 181.1
A 8 176 1709749 9434.69 726 709 181.1
A 15 32 1376382 7594.35 726 709 181.1
B 4 171 869528 5115.52 785 756 169.8
B 5 185 568154 3340.96 785 756 169.8
B 0 171 235988 1385.1 785 756 169.8
C 12 254 1759788 8740.83 730 724 201.2
C 12 252 275029 1363.03 730 724 201.2
C 9 237 109228 539.16 730 724 201.2
D 11 129 1074799 5210.15 718 688 206.2
D 2 249 835414 4048.97 718 688 206.2
D 8 129 681897 3304.31 718 688 206.2

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