ASTROSAT CZTI

Data Quality Report

Orbit 58188

Creation date: 2026-06-30T19:28:49.724970
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_042T02_9000006586_58188cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58188cztM0_level2_quad_clean.evt
Size (bytes)563,800,32096,672,960
Size537.7 MB 92.2 MB
Events in quadrant A2,960,677649,643
Events in quadrant B5,293,363670,533
Events in quadrant C2,992,282615,461
Events in quadrant D9,097,644518,084

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138412
B0203342
C0139832
D0318192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6791490.721543%
B67904055.964654%
C6790490.721649%
D679091013.402062%

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 7661 6792 4 4 0.05% 0.06%
B 7660 6791 207 207 2.70% 3.05%
C 7660 6791 6 6 0.08% 0.09%
D 7660 6791 859 859 11.21% 12.65%

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 3 26209 139.13 747 729 183.1
A 3 245 12531 64.44 747 729 183.1
A 11 3 9736 49.18 747 729 183.1
B 10 128 2008467 12818.33 729 704 156.6
B 7 252 73305 463.51 729 704 156.6
B 0 63 53712 338.42 729 704 156.6
C 12 252 56237 277.58 727 719 200.0
C 6 223 41360 203.2 727 719 200.0
C 15 201 19946 96.13 727 719 200.0
D 12 110 5279635 27195.06 688 657 194.1
D 6 239 238974 1227.71 688 657 194.1
D 8 240 233027 1197.07 688 657 194.1

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