ASTROSAT CZTI

Data Quality Report

Orbit 51829

Creation date: 2025-04-28T10:11:30.894098
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/AS1A13_090T01_9000006464_51829cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51829cztM0_level2_quad_clean.evt
Size (bytes)672,390,72091,281,600
Size641.2 MB 87.1 MB
Events in quadrant A5,844,214607,441
Events in quadrant B4,236,946692,601
Events in quadrant C4,983,711596,245
Events in quadrant D9,318,020411,031

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219022
B0170282
C0192302
D0322187

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65425618.575359%
B65422664.066035%
C65425027.673494%
D6541227934.841767%

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 7657 6543 423 423 5.52% 6.46%
B 7657 6543 51 51 0.67% 0.78%
C 7657 6542 336 336 4.39% 5.14%
D 7655 6540 1674 1674 21.87% 25.60%

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 12 3 1069245 6165.9 699 684 173.3
A 15 174 661531 3813.28 699 684 173.3
A 13 248 568686 3277.53 699 684 173.3
B 4 81 259479 1689.88 718 693 153.1
B 10 128 240687 1567.17 718 693 153.1
B 0 171 136571 887.29 718 693 153.1
C 13 3 558394 2885.13 698 691 193.3
C 12 254 287633 1484.42 698 691 193.3
C 0 192 242826 1252.62 698 691 193.3
D 11 129 5632363 34713.9 585 564 162.2
D 8 176 706837 4353.4 585 564 162.2
D 3 12 303620 1868.01 585 564 162.2

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