ASTROSAT CZTI

Data Quality Report

Orbit 15338

Creation date: 2024-06-27T17:07:05.955970
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/AS1T02_073T01_9000002260_15338cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15338cztM0_level2_quad_clean.evt
Size (bytes)514,776,96086,823,360
Size490.9 MB 82.8 MB
Events in quadrant A3,555,534537,726
Events in quadrant B3,606,380543,625
Events in quadrant C3,633,650531,911
Events in quadrant D4,298,918507,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151813
B0152192
C0152172
D0174962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72931031.412313%
B72931111.522007%
C7293851.165501%
D72931061.453449%

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 9194 7294 2 2 0.02% 0.03%
B 9194 7294 0 0 0.00% 0.00%
C 9194 7295 0 0 0.00% 0.00%
D 9194 7294 22 22 0.24% 0.30%

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 4 2 17639 90.04 919 899 185.9
A 0 226 8121 38.84 919 899 185.9
A 15 239 6707 31.24 919 899 185.9
B 10 245 27493 151.32 913 892 175.8
B 12 111 21511 117.29 913 892 175.8
B 11 111 18804 101.89 913 892 175.8
C 3 233 145539 706.28 888 894 204.8
C 7 247 21507 100.65 888 894 204.8
C 13 61 6440 27.08 888 894 204.8
D 13 122 829206 3836.53 886 859 215.9
D 2 136 57309 261.45 886 859 215.9
D 2 234 24104 107.66 886 859 215.9

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