ASTROSAT CZTI

Data Quality Report

Orbit 55982

Creation date: 2026-02-06T08:00:42.986700
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_066T02_9000006546_55982cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55982cztM0_level2_quad_clean.evt
Size (bytes)399,807,36093,026,880
Size381.3 MB 88.7 MB
Events in quadrant A4,426,338603,564
Events in quadrant B3,128,154648,685
Events in quadrant C3,417,959570,299
Events in quadrant D3,332,931551,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175487
B0138161
C0148931
D0144901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63531933.037935%
B6353791.243507%
C63531762.770345%
D6354761.196097%

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 7418 6353 174 174 2.35% 2.74%
B 7418 6353 5 5 0.07% 0.08%
C 7418 6354 130 130 1.75% 2.05%
D 7419 6355 38 38 0.51% 0.60%

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 970680 5797.08 673 657 167.3
A 7 64 497667 2970.25 673 657 167.3
A 15 32 90696 538.09 673 657 167.3
B 0 199 113443 792.91 668 643 142.3
B 1 207 98763 689.72 668 643 142.3
B 0 213 88508 617.63 668 643 142.3
C 2 12 424168 2349.84 652 645 180.2
C 12 252 242649 1342.71 652 645 180.2
C 14 254 97019 534.71 652 645 180.2
D 2 249 221611 1174.52 659 628 188.1
D 3 12 120700 638.18 659 628 188.1
D 6 239 91897 485.09 659 628 188.1

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