ASTROSAT CZTI

Data Quality Report

Orbit 56647

Creation date: 2026-03-18T18:02:57.978253
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_083T06_9000006558_56647cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56647cztM0_level2_quad_clean.evt
Size (bytes)531,244,80094,559,040
Size506.6 MB 90.2 MB
Events in quadrant A4,236,546610,351
Events in quadrant B5,605,133646,690
Events in quadrant C3,702,241599,664
Events in quadrant D5,591,777531,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176021
B0213111
C0160551
D0212901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68163915.736502%
B68165718.377347%
C68172093.065865%
D68176389.358956%

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 7576 6816 275 275 3.63% 4.03%
B 7576 6816 311 311 4.11% 4.56%
C 7577 6817 109 109 1.44% 1.60%
D 7576 6816 518 518 6.84% 7.60%

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 0 8 712606 4038.01 719 698 176.3
A 7 64 341455 1932.81 719 698 176.3
A 4 249 214821 1214.53 719 698 176.3
B 5 185 1582917 10484.07 702 676 150.9
B 4 206 743131 4919.57 702 676 150.9
B 4 21 293117 1937.74 702 676 150.9
C 12 252 348933 1796.06 707 699 193.9
C 1 16 258420 1329.23 707 699 193.9
C 13 3 108090 553.88 707 699 193.9
D 2 62 1480549 7663.07 689 658 193.1
D 2 249 984062 5092.19 689 658 193.1
D 8 129 146901 757.27 689 658 193.1

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