ASTROSAT CZTI

Data Quality Report

Orbit 45956

Creation date: 2024-06-27T23:18:09.779567
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_071T06_9000006146_45956cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45956cztM0_level2_quad_clean.evt
Size (bytes)771,600,960118,586,880
Size735.9 MB 113.1 MB
Events in quadrant A6,877,377794,076
Events in quadrant B9,327,093696,687
Events in quadrant C4,121,230836,590
Events in quadrant D7,618,560707,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253262
B0332472
C0180962
D0282372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79905997.496871%
B7990200125.043805%
C79892713.392164%
D79907889.862328%

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 8765 7990 1 1 0.01% 0.01%
B 8765 7990 1189 1189 13.57% 14.88%
C 8764 7990 42 42 0.48% 0.53%
D 8765 7990 397 397 4.53% 4.97%

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 3285702 17090.38 917 892 192.2
A 7 3 20315 101.05 917 892 192.2
A 0 247 14432 70.45 917 892 192.2
B 3 112 5582416 32381.87 860 830 172.4
B 4 21 246163 1423.31 860 830 172.4
B 5 172 34035 192.64 860 830 172.4
C 12 250 381746 1774.84 914 916 214.6
C 12 249 59904 274.91 914 916 214.6
C 3 233 48692 222.66 914 916 214.6
D 11 241 3281742 14610.31 888 858 224.6
D 12 233 194573 862.64 888 858 224.6
D 13 249 175378 777.17 888 858 224.6

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