ASTROSAT CZTI

Data Quality Report

Orbit 58362

Creation date: 2026-07-12T03:10:57.051999
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_044T03_9000006588_58362cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58362cztM0_level2_quad_clean.evt
Size (bytes)509,849,28087,782,400
Size486.2 MB 83.7 MB
Events in quadrant A3,487,981588,640
Events in quadrant B4,827,072618,590
Events in quadrant C6,842,342456,659
Events in quadrant D3,216,451546,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151282
B0189281
C0249261
D0141471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64211732.694284%
B64213825.949229%
C6421148523.127239%
D6422420.654002%

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 7301 6422 137 137 1.88% 2.13%
B 7301 6422 269 269 3.68% 4.19%
C 7301 6421 1362 1362 18.65% 21.21%
D 7302 6423 31 31 0.42% 0.48%

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 8 246 278235 1656.63 670 651 167.6
A 13 248 202742 1206.08 670 651 167.6
A 10 251 124040 736.39 670 651 167.6
B 10 128 688046 4845.1 662 638 141.9
B 0 213 606658 4271.45 662 638 141.9
B 6 255 441685 3108.66 662 638 141.9
C 15 148 4141760 25338.02 588 583 163.4
C 4 5 252831 1543.39 588 583 163.4
C 12 252 41439 249.98 588 583 163.4
D 11 129 242116 1290.93 660 630 187.1
D 3 12 190449 1014.73 660 630 187.1
D 5 173 50561 266.92 660 630 187.1

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