ASTROSAT CZTI

Data Quality Report

Orbit 56232

Creation date: 2026-02-19T09:21:18.198551
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_083T04_9000006550_56232cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56232cztM0_level2_quad_clean.evt
Size (bytes)766,180,80091,975,680
Size730.7 MB 87.7 MB
Events in quadrant A12,628,251387,544
Events in quadrant B4,983,794710,845
Events in quadrant C4,338,541628,715
Events in quadrant D5,876,946577,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423002
B0195622
C0179172
D0222292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6898338149.014207%
B68983925.682807%
C68984396.364164%
D68986118.857640%

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 7998 6900 3091 3091 38.65% 44.80%
B 7998 6900 192 192 2.40% 2.78%
C 7998 6900 330 330 4.13% 4.78%
D 7998 6900 515 515 6.44% 7.46%

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 15 32 4534239 29757.35 613 600 152.4
A 8 176 2234312 14661.37 613 600 152.4
A 12 115 1873655 12294.13 613 600 152.4
B 4 171 506808 3265.45 734 709 155.0
B 5 185 398954 2569.55 734 709 155.0
B 0 63 220921 1420.85 734 709 155.0
C 5 250 784458 4036.93 710 702 194.1
C 6 223 333956 1716.51 710 702 194.1
C 5 233 221841 1139.03 710 702 194.1
D 8 129 1706328 8570.29 709 676 199.0
D 2 249 468815 2352.23 709 676 199.0
D 13 153 258390 1294.92 709 676 199.0

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