ASTROSAT CZTI

Data Quality Report

Orbit 56608

Creation date: 2026-03-16T01:46:49.315622
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_56608cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56608cztM0_level2_quad_clean.evt
Size (bytes)437,515,20094,907,520
Size417.2 MB 90.5 MB
Events in quadrant A3,032,845636,260
Events in quadrant B3,216,165680,460
Events in quadrant C4,586,449581,278
Events in quadrant D4,864,808531,523

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137482
B0141262
C0182402
D0189762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6371821.287082%
B63711191.867839%
C63712884.520483%
D63714557.141736%

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 7531 6372 25 25 0.33% 0.39%
B 7531 6372 35 35 0.46% 0.55%
C 7531 6372 280 280 3.72% 4.39%
D 7531 6372 477 477 6.33% 7.49%

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 4 95 187997 1079.45 699 681 173.5
A 0 8 45964 260.95 699 681 173.5
A 10 251 45698 259.42 699 681 173.5
B 10 246 153407 1042.31 693 670 146.5
B 10 247 74335 502.71 693 670 146.5
B 0 63 47436 319.14 693 670 146.5
C 15 230 561428 3112.08 659 653 180.2
C 15 215 524484 2907.05 659 653 180.2
C 13 3 494814 2742.39 659 653 180.2
D 2 249 1079782 5842.04 648 616 184.7
D 10 199 310363 1676.81 648 616 184.7
D 6 239 279256 1508.41 648 616 184.7

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