ASTROSAT CZTI

Data Quality Report

Orbit 31026

Creation date: 2024-06-27T20:22:27.414788
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_071T54_9000004482_31026cztM0_level2.evt modeM0/AS1A10_071T54_9000004482_31026cztM0_level2_quad_clean.evt
Size (bytes)598,631,04081,028,800
Size570.9 MB 77.3 MB
Events in quadrant A3,523,624496,782
Events in quadrant B5,745,251496,862
Events in quadrant C3,616,416477,647
Events in quadrant D4,740,658464,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151461
B0225611
C0151941
D0187591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74301001.345895%
B74311962.637599%
C74311502.018571%
D74311982.664514%

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 7750 7430 0 0 0.00% 0.00%
B 7751 7431 2 2 0.03% 0.03%
C 7751 7431 0 0 0.00% 0.00%
D 7751 7431 106 106 1.37% 1.43%

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 13 254 14918 75.59 911 888 185.6
A 3 137 9522 46.52 911 888 185.6
A 0 226 7396 35.06 911 888 185.6
B 6 159 2063307 11624.19 899 873 177.4
B 15 33 43428 239.85 899 873 177.4
B 0 190 41653 229.84 899 873 177.4
C 14 238 140082 671.7 871 876 207.2
C 0 10 38652 182.28 871 876 207.2
C 2 114 17170 78.62 871 876 207.2
D 13 174 744453 3581.94 872 849 207.6
D 8 195 434396 2088.39 872 849 207.6
D 2 250 144140 690.23 872 849 207.6

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