ASTROSAT CZTI

Data Quality Report

Orbit 20240408_A13_098T02_9000006174_level2

Creation date: 2024-04-13T12:09:51.912588
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_098T02_9000006174cztM0_level2.fits modeM0/AS1A13_098T02_9000006174cztM0_level2_quad_clean.evt
Size (bytes)881,328,960862,286,400
Size840.5 MB 822.3 MB
Events in quadrant A5,212,8965,121,422
Events in quadrant B5,041,0965,136,352
Events in quadrant C5,358,3705,121,050
Events in quadrant D4,140,8583,809,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03403770
B02703850
C02254730
D03964910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020400
B020400
C020400
D020400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140048426194984140045998620718
B1140048426194984140045998620718
C1140048426194984140045998620718
D1140048426194984140045998620718

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10103542664.222299%
B10103457855.725795%
C10103618721.852805%
D1010361882318.629993%

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 110595 101032 0 0 0.00% 0.00%
B 110594 100564 0 0 0.00% 0.00%
C 110595 101028 0 0 0.00% 0.00%
D 110595 100703 0 0 0.00% 0.00%

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 7 110 4353 8.91 1355 1260 347.1
A 15 236 4159 8.35 1355 1260 347.1
A 0 29 4039 8.01 1355 1260 347.1
B 2 9 4844 13.7 1329 1258 261.7
B 2 8 3875 10.0 1329 1258 261.7
B 3 17 3699 9.33 1329 1258 261.7
C 1 81 3959 7.19 1415 1309 368.5
C 3 202 3938 7.13 1415 1309 368.5
C 1 80 3933 7.12 1415 1309 368.5
D 8 176 3225 6.32 1192 1076 340.2
D 15 47 3007 5.68 1192 1076 340.2
D 15 63 2987 5.62 1192 1076 340.2

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