ASTROSAT CZTI

Data Quality Report

Orbit 56080

Creation date: 2026-02-09T20:19:21.261610
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_083T03_9000006548_56080cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56080cztM0_level2_quad_clean.evt
Size (bytes)1,027,123,200198,953,280
Size979.5 MB 189.7 MB
Events in quadrant A8,219,2111,307,817
Events in quadrant B7,179,7701,424,457
Events in quadrant C6,466,8531,271,275
Events in quadrant D15,024,4781,012,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347993
B0316983
C0308093
D0547503

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145894483.070807%
B145893482.385359%
C145892541.741038%
D14589247716.978545%

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 16243 14589 221 221 1.36% 1.51%
B 16243 14589 42 42 0.26% 0.29%
C 16243 14589 36 36 0.22% 0.25%
D 16243 14589 2255 2255 13.88% 15.46%

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 12 115 767557 2023.28 1549 1510 378.6
A 3 14 534728 1408.33 1549 1510 378.6
A 15 32 389049 1023.57 1549 1510 378.6
B 2 249 455662 1376.69 1544 1483 329.9
B 0 199 106568 318.53 1544 1483 329.9
B 0 213 101465 303.06 1544 1483 329.9
C 15 230 118432 284.96 1518 1501 410.3
C 6 223 107654 258.69 1518 1501 410.3
C 13 3 77825 186.0 1518 1501 410.3
D 11 129 6988300 17745.1 1406 1344 393.7
D 2 249 1090632 2766.52 1406 1344 393.7
D 8 160 364264 921.72 1406 1344 393.7

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