ASTROSAT CZTI

Data Quality Report

Orbit 45942

Creation date: 2024-06-27T23:17:59.241468
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_033T03_9000006144_45942cztM0_level2.fits modeM0/AS1A13_033T03_9000006144_45942cztM0_level2_quad_clean.evt
Size (bytes)753,347,520112,046,400
Size718.4 MB 106.9 MB
Events in quadrant A6,393,840813,587
Events in quadrant B12,246,398517,021
Events in quadrant C3,419,852813,514
Events in quadrant D5,228,235711,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237370
B0416590
C0159860
D0208202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77201161.502591%
B7721338743.867375%
C7721110.142469%
D77203494.520725%

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 7720 7720 1 1 0.01% 0.01%
B 7721 7721 2772 2772 35.90% 35.90%
C 7721 7721 5 5 0.06% 0.06%
D 7720 7720 282 282 3.65% 3.65%

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 3001549 16358.87 874 852 183.4
A 3 137 10236 51.16 874 852 183.4
A 13 248 8399 41.14 874 852 183.4
B 3 112 9247069 65936.23 699 675 140.2
B 4 158 90002 636.99 699 675 140.2
B 0 186 87387 618.35 699 675 140.2
C 2 14 34298 164.18 856 859 203.7
C 12 249 26663 126.7 856 859 203.7
C 3 233 10323 46.47 856 859 203.7
D 12 233 695452 3241.13 844 819 214.3
D 11 241 375213 1746.91 844 819 214.3
D 1 47 314245 1462.43 844 819 214.3

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