ASTROSAT CZTI

Data Quality Report

Orbit 30456

Creation date: 2024-06-27T20:15:28.782221
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_121T02_9000004378_30456cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30456cztM0_level2_quad_clean.evt
Size (bytes)626,777,28087,900,480
Size597.7 MB 83.8 MB
Events in quadrant A3,539,957570,270
Events in quadrant B5,338,466567,367
Events in quadrant C3,740,299558,438
Events in quadrant D5,946,938535,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146092
B0198743
C0153602
D0220452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61711151.863555%
B61701832.965964%
C61702373.841167%
D617063810.340357%

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 7481 6172 7 7 0.09% 0.11%
B 7480 6171 15 15 0.20% 0.24%
C 7480 6171 18 18 0.24% 0.29%
D 7480 6171 389 389 5.20% 6.30%

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 4 2 107721 612.77 883 869 174.4
A 8 192 22544 124.3 883 869 174.4
A 13 254 11446 60.66 883 869 174.4
B 6 159 1759246 10825.0 869 850 162.4
B 0 229 116727 713.36 869 850 162.4
B 6 36 26293 156.63 869 850 162.4
C 14 238 140409 713.73 855 866 195.5
C 3 233 123970 629.65 855 866 195.5
C 0 10 94591 479.38 855 866 195.5
D 13 104 2498707 12625.92 846 826 197.8
D 8 195 113311 568.57 846 826 197.8
D 12 227 63122 314.88 846 826 197.8

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