ASTROSAT CZTI

Data Quality Report

Orbit 20210115_A10_110T03_9000004114_level2

Creation date: 2021-01-18T10:37:32.527988
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_110T03_9000004114cztM0_level2_bc.evt modeM0/AS1A10_110T03_9000004114cztM0_level2_quad_clean.evt
Size (bytes)3,417,606,720928,854,720
Size3.2 GB 885.8 MB
Events in quadrant A16,228,0515,906,167
Events in quadrant B19,931,7375,971,830
Events in quadrant C17,147,1815,730,262
Events in quadrant D45,126,7735,417,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01562310
B01722910
C01630430
D02617550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015160
B015160
C015160
D015160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744938601.154471%
B7449321462.880808%
C7449322703.047266%
D74493770510.343254%

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 86258 74487 0 0 0.00% 0.00%
B 86258 74478 42 42 0.05% 0.06%
C 86258 74484 8 8 0.01% 0.01%
D 86258 74483 1320 1320 1.53% 1.77%

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 13 254 124297 135.92 4172 4108 884.3
A 15 174 92931 100.45 4172 4108 884.3
A 0 226 26526 25.35 4172 4108 884.3
B 10 245 2916621 3765.11 4160 4063 773.6
B 15 33 771649 992.27 4160 4063 773.6
B 0 190 101969 126.56 4160 4063 773.6
C 3 233 1403874 1501.51 3995 3987 932.3
C 14 254 178849 187.56 3995 3987 932.3
C 2 16 88286 90.42 3995 3987 932.3
D 1 52 18083806 20123.33 3946 3823 898.5
D 8 195 6481600 7209.88 3946 3823 898.5
D 7 80 4187668 4656.69 3946 3823 898.5

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