ASTROSAT CZTI

Data Quality Report

Orbit 31818

Creation date: 2024-06-27T20:33:08.224861
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/AS1A10_109T01_9000004646_31818cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31818cztM0_level2_quad_clean.evt
Size (bytes)619,087,680115,099,200
Size590.4 MB 109.8 MB
Events in quadrant A3,439,983792,191
Events in quadrant B5,469,700785,508
Events in quadrant C4,400,012737,894
Events in quadrant D5,007,465724,363

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142382
B0206202
C0175252
D0192212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6384841.315789%
B63843315.184837%
C63843956.187343%
D63842884.511278%

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 7554 6385 2 2 0.03% 0.03%
B 7554 6385 147 147 1.95% 2.30%
C 7554 6385 128 128 1.69% 2.00%
D 7554 6385 231 231 3.06% 3.62%

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 44019 248.67 877 865 173.5
A 13 254 12790 68.72 877 865 173.5
A 13 6 9984 52.55 877 865 173.5
B 6 159 1659592 10288.16 852 831 161.2
B 10 245 458357 2837.72 852 831 161.2
B 12 111 18724 110.98 852 831 161.2
C 0 10 556362 2890.26 823 829 192.2
C 3 233 434958 2258.63 823 829 192.2
C 14 238 148582 768.71 823 829 192.2
D 8 195 897632 4469.21 845 827 200.7
D 12 218 698969 3479.18 845 827 200.7
D 12 233 73899 364.15 845 827 200.7

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