ASTROSAT CZTI

Data Quality Report

Orbit 58468

Creation date: 2026-07-19T05:14:12.658655
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_044T04_9000006592_58468cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58468cztM0_level2_quad_clean.evt
Size (bytes)601,836,48083,862,720
Size574.0 MB 80.0 MB
Events in quadrant A3,707,874628,507
Events in quadrant B11,178,129305,315
Events in quadrant C3,139,808611,612
Events in quadrant D3,766,792557,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154052
B0374882
C0137432
D0155883

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62441402.242152%
B6244353956.678411%
C6244580.928892%
D62431682.691014%

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 7459 6244 84 84 1.13% 1.35%
B 7459 6244 3327 3327 44.60% 53.28%
C 7460 6245 37 37 0.50% 0.59%
D 7459 6244 146 146 1.96% 2.34%

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 17 850325 4848.69 700 682 175.2
A 13 248 31984 178.63 700 682 175.2
A 12 80 26803 149.07 700 682 175.2
B 2 249 8955465 101341.78 410 395 88.4
B 5 172 432051 4884.92 410 395 88.4
B 6 255 71527 804.98 410 395 88.4
C 6 223 165267 872.16 683 678 188.7
C 5 10 87211 458.54 683 678 188.7
C 12 252 55889 292.56 683 678 188.7
D 8 240 809475 4234.98 667 634 191.0
D 0 97 103444 538.3 667 634 191.0
D 3 12 46895 242.21 667 634 191.0

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