ASTROSAT CZTI

Data Quality Report

Orbit 22814

Creation date: 2024-06-27T18:46:08.021846
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/AS1A07_054T01_9000003370_22814cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22814cztM0_level2_quad_clean.evt
Size (bytes)435,683,520128,626,560
Size415.5 MB 122.7 MB
Events in quadrant A3,081,367896,680
Events in quadrant B3,073,465890,159
Events in quadrant C3,020,646837,116
Events in quadrant D3,591,082832,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129651
B0129891
C0128491
D0146111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298881.397269%
B62971031.635700%
C62971041.651580%
D62971822.890265%

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 7373 6299 0 0 0.00% 0.00%
B 7372 6298 1 1 0.01% 0.02%
C 7372 6298 0 0 0.00% 0.00%
D 7372 6298 108 108 1.47% 1.71%

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 13 252 29020 179.79 791 776 157.1
A 13 254 11967 71.24 791 776 157.1
A 0 226 6986 39.53 791 776 157.1
B 12 111 16770 110.16 776 756 145.4
B 0 230 16185 106.14 776 756 145.4
B 11 111 14947 97.62 776 756 145.4
C 14 238 120425 702.39 743 747 170.4
C 13 61 5321 26.84 743 747 170.4
C 3 202 1903 6.78 743 747 170.4
D 1 52 496831 2690.49 761 739 184.4
D 9 85 70870 380.35 761 739 184.4
D 8 195 41508 221.11 761 739 184.4

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