ASTROSAT CZTI

Data Quality Report

Orbit 52931

Creation date: 2025-07-17T04:03:03.076900
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/AS1C09_011T06_9000006484_52931cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52931cztM0_level2_quad_clean.evt
Size (bytes)895,812,48064,791,360
Size854.3 MB 61.8 MB
Events in quadrant A15,324,53421,872
Events in quadrant B3,845,407611,911
Events in quadrant C5,207,961536,011
Events in quadrant D8,307,236363,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496953
B0156701
C0198081
D0289581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6131595897.178274%
B61312844.632197%
C61323926.392694%
D6132214835.029354%

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 7236 6132 5428 5428 75.01% 88.52%
B 7236 6132 217 217 3.00% 3.54%
C 7237 6133 391 391 5.40% 6.38%
D 7237 6133 1649 1649 22.79% 26.89%

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 9 191 14153050 237261.99 231 226 59.7
A 4 254 52221 871.66 231 226 59.7
A 4 238 37788 629.7 231 226 59.7
B 10 44 612081 4649.38 621 601 131.5
B 7 0 276805 2100.11 621 601 131.5
B 8 3 148409 1123.86 621 601 131.5
C 7 80 1104257 6678.32 600 597 165.3
C 15 254 442848 2676.09 600 597 165.3
C 12 2 317216 1915.88 600 597 165.3
D 12 0 2876627 20596.38 479 457 139.6
D 8 176 1892132 13546.37 479 457 139.6
D 15 78 342304 2447.98 479 457 139.6

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