ASTROSAT CZTI

Data Quality Report

Orbit 45677

Creation date: 2024-06-27T23:14:54.707258
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_093T12_9000006118_45677cztM0_level2.fits modeM0/AS1A13_093T12_9000006118_45677cztM0_level2_quad_clean.evt
Size (bytes)457,464,960106,862,400
Size436.3 MB 101.9 MB
Events in quadrant A5,469,837726,914
Events in quadrant B3,650,279737,239
Events in quadrant C3,262,882705,606
Events in quadrant D4,075,550639,239

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198111
B0147281
C0137681
D0162351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61202043.333333%
B61212524.116974%
C61211372.238196%
D61212734.460056%

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 7345 6120 17 17 0.23% 0.28%
B 7346 6121 97 97 1.32% 1.58%
C 7346 6121 81 81 1.10% 1.32%
D 7346 6121 138 138 1.88% 2.25%

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 2571999 17316.18 720 706 148.5
A 13 248 69015 460.02 720 706 148.5
A 0 243 14994 96.22 720 706 148.5
B 5 172 260933 1910.88 706 686 136.2
B 12 18 163400 1194.74 706 686 136.2
B 0 186 80184 583.72 706 686 136.2
C 14 254 388072 2397.5 695 698 161.6
C 0 207 90738 557.27 695 698 161.6
C 9 54 32960 199.67 695 698 161.6
D 1 52 792083 4536.19 697 676 174.5
D 13 249 290372 1660.48 697 676 174.5
D 12 1 103397 588.78 697 676 174.5

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