ASTROSAT CZTI

Data Quality Report

Orbit 15394

Creation date: 2024-06-27T17:07:54.799653
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/AS1C03_001T01_9000002270_15394cztM0_level2.evt modeM0/AS1C03_001T01_9000002270_15394cztM0_level2_quad_clean.evt
Size (bytes)1,873,056,960257,028,480
Size1.7 GB 245.1 MB
Events in quadrant A8,568,7051,687,111
Events in quadrant B11,821,0031,657,924
Events in quadrant C9,663,9481,684,154
Events in quadrant D25,411,8411,463,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384755
B0478354
C0411354
D0886454

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187461140.608130%
B187467614.059533%
C187462991.595007%
D18746391720.895124%

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 20967 18750 16 16 0.08% 0.09%
B 20967 18750 416 416 1.98% 2.22%
C 20967 18751 213 213 1.02% 1.14%
D 20967 18750 3688 3688 17.59% 19.67%

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 14 238 112357 254.04 2157 2107 434.0
A 9 143 78488 176.0 2157 2107 434.0
A 12 96 55369 122.73 2157 2107 434.0
B 10 245 1555991 3875.09 2136 2078 401.0
B 10 16 577726 1435.53 2136 2078 401.0
B 7 220 316649 784.46 2136 2078 401.0
C 3 233 1454329 3005.78 2098 2106 483.1
C 13 61 15101 26.9 2098 2106 483.1
C 7 247 11121 18.66 2098 2106 483.1
D 13 122 13970902 28967.05 1980 1920 482.2
D 2 33 2849723 5905.4 1980 1920 482.2
D 9 68 340215 701.51 1980 1920 482.2

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