ASTROSAT CZTI

Data Quality Report

Orbit 23501

Creation date: 2024-06-27T18:55:17.356826
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/AS1A07_100T02_9000003476_23501cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23501cztM0_level2_quad_clean.evt
Size (bytes)104,952,96018,722,880
Size100.1 MB 17.9 MB
Events in quadrant A684,601119,064
Events in quadrant B838,371117,044
Events in quadrant C699,018113,629
Events in quadrant D858,222111,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364
B0357
C0353
D0366

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03318402
B03819470
C03387435
D03954498

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1414352.475248%
B1395604.301075%
C1405352.491103%
D1396473.366762%

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 2703 1445 0 0 0.00% 0.00%
B 2680 1422 7 7 0.26% 0.49%
C 2690 1432 2 2 0.07% 0.14%
D 2695 1431 14 14 0.52% 0.98%

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 2786 68.78 177 173 38.0
A 3 137 1646 38.77 177 173 38.0
A 0 226 1542 36.03 177 173 38.0
B 0 189 105336 2912.12 173 170 36.1
B 0 229 16828 461.27 173 170 36.1
B 0 219 12372 337.88 173 170 36.1
C 14 238 25990 630.46 165 166 41.0
C 2 16 11598 279.1 165 166 41.0
C 0 207 9205 220.68 165 166 41.0
D 1 52 187979 4402.07 166 160 42.7
D 12 233 18260 424.22 166 160 42.7
D 13 138 9401 216.59 166 160 42.7

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