ASTROSAT CZTI

Data Quality Report

Orbit 15520

Creation date: 2024-06-27T17:09:45.986987
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/AS1T02_085T01_9000002296_15520cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15520cztM0_level2_quad_clean.evt
Size (bytes)547,346,88082,451,520
Size522.0 MB 78.6 MB
Events in quadrant A4,137,908500,801
Events in quadrant B3,716,964508,384
Events in quadrant C3,860,762493,395
Events in quadrant D4,366,781487,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170373
B0157072
C0158272
D0177982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72792343.214727%
B72791662.280533%
C72791722.362962%
D72791802.472867%

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 7650 7281 36 36 0.47% 0.49%
B 7650 7280 6 6 0.08% 0.08%
C 7650 7281 0 0 0.00% 0.00%
D 7650 7280 48 48 0.63% 0.66%

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 501883 2797.97 885 866 179.1
A 14 238 142493 790.93 885 866 179.1
A 14 237 78384 432.91 885 866 179.1
B 0 189 53133 310.96 884 860 168.1
B 4 216 39186 227.99 884 860 168.1
B 4 142 38592 224.46 884 860 168.1
C 3 233 393010 1997.1 849 854 196.4
C 14 238 130284 659.14 849 854 196.4
C 0 207 17463 84.58 849 854 196.4
D 5 222 916149 4325.71 865 839 211.6
D 7 38 78412 366.61 865 839 211.6
D 2 234 31505 144.93 865 839 211.6

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