ASTROSAT CZTI

Data Quality Report

Orbit 57044

Creation date: 2026-04-14T10:59:57.231369
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_083T14_9000006564_57044cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_57044cztM0_level2_quad_clean.evt
Size (bytes)479,162,880100,667,520
Size457.0 MB 96.0 MB
Events in quadrant A3,994,752671,077
Events in quadrant B3,907,414725,335
Events in quadrant C4,580,200599,245
Events in quadrant D4,729,726581,745

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166372
B0159574
C0181772
D0187462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67522683.969194%
B67512483.673530%
C67526129.063981%
D67524015.938981%

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 7897 6753 166 166 2.10% 2.46%
B 7897 6753 117 117 1.48% 1.73%
C 7897 6752 442 442 5.60% 6.55%
D 7897 6753 284 284 3.60% 4.21%

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 13 654173 3593.88 742 722 181.8
A 4 249 303900 1667.43 742 722 181.8
A 3 14 40990 221.46 742 722 181.8
B 0 63 359623 2307.61 735 708 155.5
B 10 16 325389 2087.51 735 708 155.5
B 0 213 104718 668.72 735 708 155.5
C 15 198 1167235 6161.31 702 696 189.3
C 1 16 241631 1272.55 702 696 189.3
C 9 38 186021 978.83 702 696 189.3
D 15 142 948865 4750.23 704 672 199.6
D 11 247 544105 2722.47 704 672 199.6
D 7 96 197210 984.61 704 672 199.6

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