ASTROSAT CZTI

Data Quality Report

Orbit 00725

Creation date: 2024-06-27T14:02:05.896150
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/AS1P01_147T01_9000000106_00725cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00725cztM0_level2_quad_clean.evt
Size (bytes)1,075,507,20053,588,160
Size1.0 GB 51.1 MB
Events in quadrant A7,663,320305,131
Events in quadrant B7,983,551310,916
Events in quadrant C7,185,841305,050
Events in quadrant D9,327,053266,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271801
B0281141
C0257962
D0322251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222941.510768%
B6222550.883960%
C6221160.257193%
D622188514.226009%

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 7257 6223 361 361 4.97% 5.80%
B 7257 6223 285 285 3.93% 4.58%
C 7256 6222 168 168 2.32% 2.70%
D 7256 6222 1308 1308 18.03% 21.02%

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 15 171 296971 639.95 1905 1921 461.0
A 10 230 36191 74.33 1905 1921 461.0
A 15 69 11710 21.23 1905 1921 461.0
B 7 221 206055 430.4 2003 2016 474.1
B 14 50 91085 187.88 2003 2016 474.1
B 0 220 43846 88.24 2003 2016 474.1
C 15 241 41648 78.49 1809 1873 506.8
C 8 208 26940 49.46 1809 1873 506.8
C 3 111 26334 48.27 1809 1873 506.8
D 9 52 2525093 5105.81 1594 1653 494.2
D 6 226 651003 1313.86 1594 1653 494.2
D 10 85 108378 215.94 1594 1653 494.2

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