ASTROSAT CZTI

Data Quality Report

Orbit 55287

Creation date: 2025-12-17T04:29:17.579173
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_009T01_9000006534_55287cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55287cztM0_level2_quad_clean.evt
Size (bytes)387,912,96095,529,600
Size369.9 MB 91.1 MB
Events in quadrant A2,950,849625,032
Events in quadrant B3,466,252660,648
Events in quadrant C3,429,068595,479
Events in quadrant D4,008,944559,348

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137203
B0151444
C0150163
D0165543

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6474510.787766%
B64732133.290592%
C64731502.317318%
D64731902.935270%

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 8774 6476 29 29 0.33% 0.45%
B 8773 6475 120 120 1.37% 1.85%
C 8773 6475 120 120 1.37% 1.85%
D 8773 6475 155 155 1.77% 2.39%

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 0 8 116131 685.5 681 665 168.4
A 4 205 68764 404.29 681 665 168.4
A 4 3 47044 275.35 681 665 168.4
B 2 249 343000 2397.77 670 645 142.8
B 10 247 154661 1078.69 670 645 142.8
B 0 199 151156 1054.14 670 645 142.8
C 13 3 386651 2086.43 669 663 185.0
C 12 252 182926 985.21 669 663 185.0
C 12 249 113825 611.69 669 663 185.0
D 11 129 824448 4441.07 660 634 185.5
D 11 176 144463 775.36 660 634 185.5
D 2 31 71569 382.4 660 634 185.5

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