ASTROSAT CZTI

Data Quality Report

Orbit 56796

Creation date: 2026-03-28T17:53:19.763407
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_9000006562_56796cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56796cztM0_level2_quad_clean.evt
Size (bytes)455,878,08098,349,120
Size434.8 MB 93.8 MB
Events in quadrant A3,267,238661,743
Events in quadrant B5,890,993635,265
Events in quadrant C3,436,782626,731
Events in quadrant D3,758,536586,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145101
B0219511
C0151411
D0158051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67011402.089240%
B6702100314.965682%
C67021792.670845%
D67022473.685467%

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 7751 6701 65 65 0.84% 0.97%
B 7752 6702 759 759 9.79% 11.32%
C 7752 6702 110 110 1.42% 1.64%
D 7752 6702 210 210 2.71% 3.13%

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 10 251 167186 905.7 746 728 183.8
A 7 64 98382 531.34 746 728 183.8
A 5 242 73660 396.83 746 728 183.8
B 2 249 2366963 15967.62 688 663 148.2
B 4 206 357006 2404.58 688 663 148.2
B 8 128 98860 662.63 688 663 148.2
C 13 3 381758 1921.15 718 711 198.3
C 9 38 175018 878.82 718 711 198.3
C 14 254 33188 163.74 718 711 198.3
D 8 160 517423 2563.88 718 688 201.5
D 2 249 135699 669.88 718 688 201.5
D 8 240 122005 601.94 718 688 201.5

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