ASTROSAT CZTI

Data Quality Report

Orbit 58831

Creation date: 2026-08-12T15:15:20.405560
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_106T01_9000006596_58831cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58831cztM0_level2_quad_clean.evt
Size (bytes)591,943,68087,779,520
Size564.5 MB 83.7 MB
Events in quadrant A3,754,353638,723
Events in quadrant B10,558,286390,753
Events in quadrant C3,688,503610,165
Events in quadrant D3,423,786581,179

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152411
B0356441
C0151651
D0142091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62662503.989786%
B6267309549.385671%
C62671672.664752%
D6267921.468007%

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 7421 6267 135 135 1.82% 2.15%
B 7422 6265 2375 2375 32.00% 37.91%
C 7422 6268 95 95 1.28% 1.52%
D 7422 6268 26 26 0.35% 0.41%

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 15 233 600289 3310.68 733 715 181.1
A 13 248 113277 621.54 733 715 181.1
A 3 62 105578 579.02 733 715 181.1
B 2 247 8080965 68919.27 545 526 117.2
B 8 234 99732 846.14 545 526 117.2
B 2 249 81944 694.43 545 526 117.2
C 13 3 375717 1941.36 702 695 193.2
C 7 64 170097 876.93 702 695 193.2
C 12 252 76480 392.31 702 695 193.2
D 11 129 139345 691.69 711 680 200.5
D 3 12 104517 517.96 711 680 200.5
D 12 110 84785 419.53 711 680 200.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct