ASTROSAT CZTI

Data Quality Report

Orbit 56273

Creation date: 2026-02-23T08:33:36.378151
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_049T01_9000006552_56273cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56273cztM0_level2_quad_clean.evt
Size (bytes)829,264,32079,202,880
Size790.8 MB 75.5 MB
Events in quadrant A15,759,69090,254
Events in quadrant B5,390,359642,859
Events in quadrant C3,977,350623,066
Events in quadrant D5,061,856585,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512762
B0204752
C0163512
D0195343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6540587389.801223%
B654191013.912246%
C65412714.143097%
D65403325.076453%

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 8759 6539 5459 5459 62.32% 83.48%
B 8761 6543 526 526 6.00% 8.04%
C 8761 6542 165 165 1.88% 2.52%
D 8760 6542 250 250 2.85% 3.82%

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 32 5652395 51964.44 427 417 108.8
A 4 95 3333617 30645.53 427 417 108.8
A 8 176 3117058 28654.48 427 417 108.8
B 5 185 2231590 15161.27 698 674 147.1
B 0 63 157450 1065.45 698 674 147.1
B 10 247 59524 399.94 698 674 147.1
C 12 254 675786 3457.62 713 709 195.2
C 13 3 204143 1041.95 713 709 195.2
C 12 252 157925 805.23 713 709 195.2
D 2 249 1214418 5963.74 713 681 203.5
D 8 129 460290 2258.31 713 681 203.5
D 15 115 242755 1189.44 713 681 203.5

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