ASTROSAT CZTI

Data Quality Report

Orbit 47883

Creation date: 2024-08-05T13:13:45.621294
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/AS1A13_053T01_9000006370_47883cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47883cztM0_level2_quad_clean.evt
Size (bytes)459,342,72097,781,760
Size438.1 MB 93.3 MB
Events in quadrant A6,042,732645,334
Events in quadrant B2,915,270679,922
Events in quadrant C2,714,389667,307
Events in quadrant D4,852,308537,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224421
B0131461
C0126861
D0190371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61611883.051453%
B61621131.833820%
C6162560.908796%
D616279312.869198%

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 7081 6162 5 5 0.07% 0.08%
B 7082 6163 30 30 0.42% 0.49%
C 7082 6163 10 10 0.14% 0.16%
D 7082 6163 600 600 8.47% 9.74%

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 3399621 23955.08 672 656 141.9
A 7 3 28069 193.2 672 656 141.9
A 13 248 15306 103.25 672 656 141.9
B 5 255 195799 1482.18 674 652 131.7
B 0 183 29972 222.69 674 652 131.7
B 4 171 23321 172.17 674 652 131.7
C 14 254 47929 296.75 681 683 159.2
C 12 2 6080 33.9 681 683 159.2
C 13 61 4465 23.75 681 683 159.2
D 2 37 1995167 12356.4 646 626 161.4
D 2 249 173461 1070.73 646 626 161.4
D 7 96 110762 682.3 646 626 161.4

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