ASTROSAT CZTI

Data Quality Report

Orbit 45454

Creation date: 2024-06-27T23:12:29.346943
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/AS1A13_038T03_9000006088_45454cztM0_level2.fits modeM0/AS1A13_038T03_9000006088_45454cztM0_level2_quad_clean.evt
Size (bytes)544,095,360124,672,320
Size518.9 MB 118.9 MB
Events in quadrant A6,521,830808,095
Events in quadrant B3,983,755843,526
Events in quadrant C3,800,743828,126
Events in quadrant D5,211,460737,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025357514
B017638308
C017386270
D021267490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01661
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80132703.369525%
B80352172.700685%
C80461231.528710%
D79913043.804280%

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 9116 8171 1 1 0.01% 0.01%
B 9115 8161 25 25 0.27% 0.31%
C 9112 8161 26 26 0.29% 0.32%
D 9115 8143 165 165 1.81% 2.03%

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 10 83 3023274 16088.48 895 873 187.9
A 2 79 17746 89.82 895 873 187.9
A 9 191 10523 51.37 895 873 187.9
B 0 171 104865 581.4 897 866 178.9
B 5 172 90266 499.78 897 866 178.9
B 12 48 60234 331.89 897 866 178.9
C 1 3 115887 539.84 897 901 213.0
C 14 254 99781 464.22 897 901 213.0
C 3 233 38639 177.17 897 901 213.0
D 1 52 654481 2935.14 885 858 222.7
D 11 241 378778 1697.08 885 858 222.7
D 13 249 202321 904.68 885 858 222.7

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