ASTROSAT CZTI

Data Quality Report

Orbit 31194

Creation date: 2024-06-27T20:24:49.278976
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/AS1A10_082T10_9000004512_31194cztM0_level2.evt modeM0/AS1A10_082T10_9000004512_31194cztM0_level2_quad_clean.evt
Size (bytes)674,055,36087,770,880
Size642.8 MB 83.7 MB
Events in quadrant A3,550,861574,896
Events in quadrant B6,239,486561,014
Events in quadrant C3,788,336542,822
Events in quadrant D6,396,710525,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146543
B0226952
C0153272
D0235712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64971081.662306%
B64975959.158073%
C64972113.247653%
D64973485.356318%

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 7802 6498 0 0 0.00% 0.00%
B 7802 6498 272 272 3.49% 4.19%
C 7802 6498 15 15 0.19% 0.23%
D 7802 6498 222 222 2.85% 3.42%

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 13010 66.64 920 906 181.6
A 3 137 8292 40.66 920 906 181.6
A 0 226 8041 39.28 920 906 181.6
B 6 159 1769513 11075.22 866 849 159.7
B 4 80 818673 5121.14 866 849 159.7
B 0 190 179692 1119.9 866 849 159.7
C 0 10 177098 891.54 869 877 197.7
C 14 238 148031 744.49 869 877 197.7
C 4 175 46406 230.34 869 877 197.7
D 8 195 2693290 11873.61 872 860 226.8
D 2 250 239265 1051.37 872 860 226.8
D 2 69 47542 205.87 872 860 226.8

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