ASTROSAT CZTI

Data Quality Report

Orbit 36813

Creation date: 2024-06-27T21:31:58.633457
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_075T01_9000005244_36813cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36813cztM0_level2_quad_clean.evt
Size (bytes)65,799,36017,133,120
Size62.8 MB 16.3 MB
Events in quadrant A429,710111,710
Events in quadrant B593,854114,759
Events in quadrant C437,029112,922
Events in quadrant D466,547107,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0202
C0202
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02081198
B02530141
C02146256
D02277202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91520.218579%
B92430.324675%
C90720.220507%
D913212.300110%

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 982 941 0 0 0.00% 0.00%
B 979 946 3 3 0.31% 0.32%
C 974 929 1 1 0.10% 0.11%
D 988 938 17 17 1.72% 1.81%

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 10 83 49189 2262.32 96 94 21.7
A 14 235 4038 181.74 96 94 21.7
A 13 6 1649 71.66 96 94 21.7
B 12 1 169975 8060.07 98 96 21.1
B 0 190 8677 407.13 98 96 21.1
B 5 200 7458 349.3 98 96 21.1
C 15 214 41235 1736.44 94 94 23.7
C 14 254 17567 737.48 94 94 23.7
C 3 233 7272 302.96 94 94 23.7
D 13 249 74616 3078.21 92 89 24.2
D 2 153 21687 892.07 92 89 24.2
D 2 152 6818 277.93 92 89 24.2

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