ASTROSAT CZTI

Data Quality Report

Orbit 18626

Creation date: 2024-06-27T17:52:37.520011
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/AS1A05_118T04_9000002782_18626cztM0_level2.evt modeM0/AS1A05_118T04_9000002782_18626cztM0_level2_quad_clean.evt
Size (bytes)532,756,80078,675,840
Size508.1 MB 75.0 MB
Events in quadrant A3,774,080481,306
Events in quadrant B3,574,174492,329
Events in quadrant C3,784,693473,438
Events in quadrant D4,545,053466,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157022
B0149832
C0154882
D0180482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67331692.510025%
B67341201.782002%
C67341632.420552%
D67341221.811702%

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 8948 6733 32 32 0.36% 0.48%
B 8949 6735 0 0 0.00% 0.00%
C 8949 6734 13 13 0.15% 0.19%
D 8949 6734 18 18 0.20% 0.27%

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 0 13 153055 848.78 899 881 179.3
A 14 111 113968 630.76 899 881 179.3
A 9 143 33024 179.28 899 881 179.3
B 0 230 70147 405.8 894 872 170.7
B 12 111 20354 114.12 894 872 170.7
B 11 111 17940 99.98 894 872 170.7
C 9 54 180539 897.47 862 869 200.2
C 14 238 135559 672.79 862 869 200.2
C 3 233 68335 337.0 862 869 200.2
D 1 52 989135 4676.81 877 852 211.3
D 7 238 226714 1068.84 877 852 211.3
D 2 234 26996 123.72 877 852 211.3

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