ASTROSAT CZTI

Data Quality Report

Orbit 20210201_A10_048T07_9000004148_level2

Creation date: 2021-02-03T18:32:58.269934
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_048T07_9000004148cztM0_level2_bc.evt modeM0/AS1A10_048T07_9000004148cztM0_level2_quad_clean.evt
Size (bytes)4,165,102,0801,079,136,000
Size3.9 GB 1.0 GB
Events in quadrant A17,125,8486,928,933
Events in quadrant B17,751,8207,144,935
Events in quadrant C39,341,4926,615,426
Events in quadrant D46,467,3766,491,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01676450
B01700070
C02448000
D02576500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016360
B016360
C016360
D016360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A802948821.098463%
B8029410921.360002%
C8029455906.961915%
D8029452886.585797%

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 93639 80299 0 0 0.00% 0.00%
B 93639 80297 2 2 0.00% 0.00%
C 93639 80299 124 124 0.13% 0.15%
D 93639 80298 1998 1998 2.13% 2.49%

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 4 2 272713 288.71 4327 4247 929.9
A 13 254 133994 139.53 4327 4247 929.9
A 5 168 48444 47.53 4327 4247 929.9
B 5 255 373403 445.49 4402 4291 828.6
B 15 33 181025 213.3 4402 4291 828.6
B 10 245 117357 136.46 4402 4291 828.6
C 3 233 22947483 23796.6 4106 4093 964.1
C 15 208 188576 191.34 4106 4093 964.1
C 14 254 154389 155.88 4106 4093 964.1
D 8 195 24363995 25747.88 4162 4021 946.1
D 1 52 3494255 3689.09 4162 4021 946.1
D 12 79 2145879 2263.89 4162 4021 946.1

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