ASTROSAT CZTI

Data Quality Report

Orbit 10741

Creation date: 2024-06-27T16:03:09.867729
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/AS1A03_078T01_9000001546_10741cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10741cztM0_level2_quad_clean.evt
Size (bytes)595,296,00097,035,840
Size567.7 MB 92.5 MB
Events in quadrant A4,659,058623,634
Events in quadrant B4,229,941645,234
Events in quadrant C3,050,579651,368
Events in quadrant D5,657,033573,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179827
B0169418
C01322917
D0213134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63655979.379419%
B63653575.608798%
C6360250.393082%
D636681112.739554%

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 7627 6368 565 565 7.41% 8.87%
B 7627 6368 181 181 2.37% 2.84%
C 7627 6368 0 0 0.00% 0.00%
D 7627 6368 663 663 8.69% 10.41%

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 15 239 1668284 10931.94 759 743 152.5
A 13 251 21972 139.17 759 743 152.5
A 14 254 13933 86.47 759 743 152.5
B 4 239 1001170 6754.92 782 764 148.1
B 0 214 71609 478.36 782 764 148.1
B 3 189 44001 291.94 782 764 148.1
C 13 61 5665 26.98 781 787 180.8
C 14 67 3485 14.92 781 787 180.8
C 8 222 2311 8.43 781 787 180.8
D 2 16 2145070 12103.63 735 717 177.2
D 10 172 251145 1413.52 735 717 177.2
D 13 249 227238 1278.58 735 717 177.2

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