ASTROSAT CZTI

Data Quality Report

Orbit 05494

Creation date: 2024-06-27T14:55:46.219821
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/AS1A02_063T01_9000000702_05494cztM0_level2.evt modeM0/AS1A02_063T01_9000000702_05494cztM0_level2_quad_clean.evt
Size (bytes)1,010,044,800141,367,680
Size963.3 MB 134.8 MB
Events in quadrant A6,298,890860,361
Events in quadrant B7,363,324857,218
Events in quadrant C9,161,292785,449
Events in quadrant D6,812,668806,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379709120
B04144510492
C04757510551
D0403849949

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193
B0206
C0207
D0203

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037892
B037897
C037686
D038096

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141841731.219684%
B139462641.893016%
C139299787.021322%
D140372441.738263%

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 20491 15906 0 0 0.00% 0.00%
B 20495 15718 39 39 0.19% 0.25%
C 20495 15780 714 714 3.48% 4.52%
D 20495 15833 92 92 0.45% 0.58%

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 15 234 41045 117.62 1625 1583 335.5
A 12 194 15787 42.33 1625 1583 335.5
A 0 226 15651 41.93 1625 1583 335.5
B 10 16 508561 1626.55 1617 1577 311.7
B 15 204 324980 1037.57 1617 1577 311.7
B 5 250 72823 228.58 1617 1577 311.7
C 9 247 3091137 8896.37 1498 1504 347.3
C 1 16 168921 482.06 1498 1504 347.3
C 1 241 35952 99.19 1498 1504 347.3
D 2 33 306432 803.71 1553 1506 379.4
D 8 195 142813 372.45 1553 1506 379.4
D 2 14 126169 328.58 1553 1506 379.4

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