ASTROSAT CZTI

Data Quality Report

Orbit 32868

Creation date: 2024-06-27T20:42:47.991158
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/AS1A11_005T04_9000004742_32868cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32868cztM0_level2_quad_clean.evt
Size (bytes)2,082,456,000362,329,920
Size1.9 GB 345.5 MB
Events in quadrant A12,349,3322,367,079
Events in quadrant B15,203,6862,345,672
Events in quadrant C12,158,2522,393,140
Events in quadrant D21,702,6482,179,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0553312270
B0642363068
C0545262551
D0873995124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052824
B052622
C052822
D052521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245891570.638497%
B2454513085.328988%
C245951860.756251%
D2441913445.503911%

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 34320 24830 88 88 0.26% 0.35%
B 34320 24779 834 834 2.43% 3.37%
C 34320 24842 113 113 0.33% 0.45%
D 34320 24711 1046 1046 3.05% 4.23%

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 14 63 1330096 2361.71 2829 2771 562.0
A 13 6 51168 86.11 2829 2771 562.0
A 13 254 45287 75.65 2829 2771 562.0
B 5 172 3053310 5802.8 2783 2706 525.7
B 0 197 428704 810.33 2783 2706 525.7
B 15 85 338068 637.92 2783 2706 525.7
C 0 10 498865 782.88 2780 2812 633.6
C 14 67 314163 491.38 2780 2812 633.6
C 3 233 220166 343.03 2780 2812 633.6
D 8 195 4003953 6233.7 2670 2612 641.9
D 10 203 1860056 2893.72 2670 2612 641.9
D 12 6 1532764 2383.83 2670 2612 641.9

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