ASTROSAT CZTI

Data Quality Report

Orbit 15577

Creation date: 2024-06-27T17:10:26.465057
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/AS1A04_198T01_9000002308_15577cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15577cztM0_level2_quad_clean.evt
Size (bytes)523,990,08084,507,840
Size499.7 MB 80.6 MB
Events in quadrant A3,464,655524,738
Events in quadrant B4,060,566525,159
Events in quadrant C3,562,347506,819
Events in quadrant D4,297,469505,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147693
B0165142
C0148552
D0174082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71301401.963534%
B71302193.071529%
C71301512.117812%
D71303855.399719%

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 7866 7131 0 0 0.00% 0.00%
B 7865 7130 53 53 0.67% 0.74%
C 7866 7131 0 0 0.00% 0.00%
D 7865 7130 261 261 3.32% 3.66%

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 9 143 12998 66.77 896 876 181.5
A 0 226 7993 39.2 896 876 181.5
A 12 194 6853 32.92 896 876 181.5
B 5 65 364899 2160.54 884 861 168.5
B 0 189 65881 385.89 884 861 168.5
B 4 173 63362 370.94 884 861 168.5
C 14 238 132190 658.69 855 858 199.4
C 3 233 86337 428.71 855 858 199.4
C 0 207 10671 49.21 855 858 199.4
D 12 110 755485 3593.2 866 841 210.0
D 1 52 63862 300.07 866 841 210.0
D 7 223 58605 275.04 866 841 210.0

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