ASTROSAT CZTI

Data Quality Report

Orbit 53589

Creation date: 2025-08-24T23:07:54.018436
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_004T05_9000006502_53589cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53589cztM0_level2_quad_clean.evt
Size (bytes)819,417,60078,206,400
Size781.5 MB 74.6 MB
Events in quadrant A6,633,560573,706
Events in quadrant B4,635,265649,241
Events in quadrant C8,123,580462,689
Events in quadrant D10,438,817231,879

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242051
B0181601
C0285841
D0355341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646288613.710925%
B64623745.787682%
C6463182428.222188%
D6463407062.973851%

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 7282 6463 656 656 9.01% 10.15%
B 7282 6463 172 172 2.36% 2.66%
C 7283 6464 1293 1293 17.75% 20.00%
D 7283 6464 2356 2356 32.35% 36.45%

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 3 62 2618712 15620.55 672 657 167.6
A 3 63 707637 4218.18 672 657 167.6
A 4 239 149813 889.94 672 657 167.6
B 4 206 672948 4610.15 686 662 145.8
B 10 28 411432 2816.82 686 662 145.8
B 5 185 257408 1760.62 686 662 145.8
C 15 224 3586349 21659.07 599 594 165.6
C 4 5 668236 4032.76 599 594 165.6
C 10 22 304319 1834.59 599 594 165.6
D 8 176 8264649 77698.15 367 349 106.4
D 7 70 158083 1482.96 367 349 106.4
D 2 153 133894 1255.54 367 349 106.4

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