ASTROSAT CZTI

Data Quality Report

Orbit 11009

Creation date: 2024-06-27T16:06:50.870751
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/AS1G08_027T06_9000001594_11009cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_11009cztM0_level2_quad_clean.evt
Size (bytes)14,345,2802,041,920
Size13.7 MB 1.9 MB
Events in quadrant A112,2338,941
Events in quadrant B100,7388,751
Events in quadrant C107,93010,804
Events in quadrant D94,9499,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032
B032
C032
D032

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01590715439
B01530914876
C01222111718
D01475114346

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123119
B0121113
C0122115
D0124120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21910.456621%
B20710.483092%
C25100.000000%
D19010.526316%

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 4890 397 1 1 0.02% 0.25%
B 3992 371 1 1 0.03% 0.27%
C 4971 446 0 0 0.00% 0.00%
D 4791 342 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 8 5 10234 1407.0 25 24 7.3
A 8 15 3813 522.15 25 24 7.3
A 14 254 284 35.83 25 24 7.3
B 4 239 7299 1111.58 23 22 6.5
B 0 219 1113 166.65 23 22 6.5
B 0 189 660 97.46 23 22 6.5
C 13 61 204 21.76 27 27 8.1
C 8 222 95 8.36 27 27 8.1
C 3 202 81 6.64 27 27 8.1
D 11 129 10902 1634.25 20 19 6.7
D 1 52 4846 724.85 20 19 6.7
D 8 195 1565 232.16 20 19 6.7

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