ASTROSAT CZTI

Data Quality Report

Orbit 20210721_C06_005T01_9000004580_level2

Creation date: 2021-07-24T11:28:05.747686
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/AS1C06_005T01_9000004580cztM0_level2_bc.evt modeM0/AS1C06_005T01_9000004580cztM0_level2_quad_clean.evt
Size (bytes)3,467,378,8801,111,089,600
Size3.2 GB 1.0 GB
Events in quadrant A12,579,4638,101,805
Events in quadrant B47,599,4445,800,645
Events in quadrant C15,887,0227,935,555
Events in quadrant D24,909,5047,745,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01222390
B02930030
C01375510
D01609660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012240
B012160
C012220
D012080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593867621.283131%
B587602159236.746086%
C5938626814.514532%
D5920418313.092696%

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 77725 59758 2 2 0.00% 0.00%
B 77725 58893 1935 1935 2.49% 3.29%
C 77725 59750 13 13 0.02% 0.02%
D 77725 59601 226 226 0.29% 0.38%

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 112630 157.48 3245 3203 694.9
A 12 194 22684 28.04 3245 3203 694.9
A 12 16 21267 26.0 3245 3203 694.9
B 12 1 24539890 53632.32 2387 2332 457.5
B 6 159 12232611 26732.01 2387 2332 457.5
B 4 80 659586 1436.58 2387 2332 457.5
C 3 233 2610690 3463.82 3164 3163 752.8
C 0 10 591883 782.05 3164 3163 752.8
C 14 254 157808 205.43 3164 3163 752.8
D 8 195 5847804 7911.89 3216 3125 738.7
D 1 52 2392661 3234.7 3216 3125 738.7
D 12 218 2057624 2781.16 3216 3125 738.7

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