ASTROSAT CZTI

Data Quality Report

Orbit 56595

Creation date: 2026-03-16T09:05:28.350606
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_083T06_9000006558_56595cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56595cztM0_level2_quad_clean.evt
Size (bytes)357,145,92072,852,480
Size340.6 MB 69.5 MB
Events in quadrant A4,398,714612,647
Events in quadrant B4,322,840670,835
Events in quadrant C4,111,319576,532
Events in quadrant D12,94316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176240
B0173150
C0168790
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64164376.811097%
B64163545.517456%
C64154386.827747%
D77100.000000%

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 7581 6417 405 405 5.34% 6.31%
B 7581 6417 271 271 3.57% 4.22%
C 7580 6416 132 132 1.74% 2.06%
D 7 7 4 4 57.14% 57.14%

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 1052960 6382.5 667 651 164.9
A 0 8 173555 1048.7 667 651 164.9
A 3 14 147773 892.33 667 651 164.9
B 5 185 1287709 9002.65 673 649 143.0
B 5 236 173663 1210.19 673 649 143.0
B 4 141 30826 211.08 673 649 143.0
C 15 230 520202 2951.34 644 638 176.0
C 15 215 466973 2648.98 644 638 176.0
C 15 199 113530 641.27 644 638 176.0
D 6 239 9511 12690.2 0 0 0.7
D 15 30 206 274.86 0 0 0.7
D 5 32 176 234.83 0 0 0.7

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