ASTROSAT CZTI

Data Quality Report

Orbit 12770

Creation date: 2024-06-27T16:32:04.108627
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/AS1A04_110T04_9000001886_12770cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12770cztM0_level2_quad_clean.evt
Size (bytes)577,834,560134,677,440
Size551.1 MB 128.4 MB
Events in quadrant A3,350,174908,282
Events in quadrant B4,335,035910,455
Events in quadrant C3,332,630906,123
Events in quadrant D5,976,734835,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153543
B0179792
C0153522
D0229382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7444340.456744%
B74443094.150994%
C7444410.550779%
D74445277.079527%

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 8470 7448 0 0 0.00% 0.00%
B 8470 7448 138 138 1.63% 1.85%
C 8470 7448 1 1 0.01% 0.01%
D 8470 7448 304 304 3.59% 4.08%

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 0 226 7758 38.94 866 844 177.5
A 12 189 6861 33.89 866 844 177.5
A 12 194 6754 33.29 866 844 177.5
B 4 239 732271 4534.63 861 839 161.3
B 3 209 43310 263.31 861 839 161.3
B 15 32 33432 202.07 861 839 161.3
C 15 208 18923 92.04 850 853 196.3
C 13 61 6258 27.53 850 853 196.3
C 8 222 2476 8.27 850 853 196.3
D 1 52 2407921 12160.7 818 792 197.9
D 2 136 137462 690.45 818 792 197.9
D 10 253 88951 445.38 818 792 197.9

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