ASTROSAT CZTI

Data Quality Report

Orbit 20180812_G08_058T09_9000002300_level2

Creation date: 2018-08-14T10:59:36.122817
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/AS1G08_058T09_9000002300cztM0_level2_bc.evt modeM0/AS1G08_058T09_9000002300cztM0_level2_quad_clean.evt
Size (bytes)3,019,170,2401,034,951,040
Size2.8 GB 987.0 MB
Events in quadrant A18,946,4036,540,220
Events in quadrant B19,431,0026,579,600
Events in quadrant C17,825,5106,285,732
Events in quadrant D29,451,7816,126,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017240
B017240
C017240
D017240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01782510
B01821480
C01774380
D02175940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A848538711.026481%
B8485311951.408318%
C8485311331.335250%
D8485347495.596738%

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 99534 84850 17 17 0.02% 0.02%
B 99534 84847 9 9 0.01% 0.01%
C 99534 84850 0 0 0.00% 0.00%
D 99534 84845 1583 1583 1.59% 1.87%

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 0 253 946749 960.36 4575 4489 981.2
A 14 238 254762 255.08 4575 4489 981.2
A 7 16 68857 65.6 4575 4489 981.2
B 0 189 212212 244.11 4574 4455 851.1
B 15 222 184817 211.92 4574 4455 851.1
B 0 214 177463 203.28 4574 4455 851.1
C 3 233 654927 646.38 4345 4318 1006.5
C 7 247 245389 239.5 4345 4318 1006.5
C 10 22 90262 85.38 4345 4318 1006.5
D 1 52 8023364 7984.83 4387 4232 1004.3
D 5 222 2356096 2341.8 4387 4232 1004.3
D 12 221 655179 648.16 4387 4232 1004.3

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