ASTROSAT CZTI

Data Quality Report

Orbit 02594

Creation date: 2024-06-27T14:19:59.144889
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/AS1T01_071T01_9000000382_02594cztM0_level2.evt modeM0/AS1T01_071T01_9000000382_02594cztM0_level2_quad_clean.evt
Size (bytes)469,808,64077,250,240
Size448.0 MB 73.7 MB
Events in quadrant A3,304,146455,804
Events in quadrant B3,559,167461,062
Events in quadrant C3,331,366464,164
Events in quadrant D3,534,118447,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151123
B0156362
C0152162
D0157572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73491692.299633%
B73491852.517349%
C73491231.673697%
D73491381.877807%

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 7754 7351 0 0 0.00% 0.00%
B 7754 7351 20 20 0.26% 0.27%
C 7754 7351 3 3 0.04% 0.04%
D 7754 7351 13 13 0.17% 0.18%

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 3 1 18624 101.26 853 830 175.7
A 12 194 9688 50.41 853 830 175.7
A 0 226 9003 46.51 853 830 175.7
B 0 171 178821 1062.2 866 843 167.6
B 15 85 18448 105.07 866 843 167.6
B 12 111 12231 67.97 866 843 167.6
C 10 65 23459 116.41 833 835 194.4
C 12 4 20498 101.17 833 835 194.4
C 10 34 15788 76.94 833 835 194.4
D 2 184 176764 894.4 824 803 196.7
D 2 54 83552 420.61 824 803 196.7
D 2 136 50049 250.31 824 803 196.7

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