ASTROSAT CZTI

Data Quality Report

Orbit 31445

Creation date: 2024-06-27T20:28:36.139230
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/AS1C06_005T01_9000004580_31445cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31445cztM0_level2_quad_clean.evt
Size (bytes)703,546,560139,020,480
Size671.0 MB 132.6 MB
Events in quadrant A3,486,250953,461
Events in quadrant B7,639,162888,013
Events in quadrant C4,906,160925,881
Events in quadrant D4,770,036922,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153421
B0281621
C0194111
D0190741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74691512.021690%
B7469110614.807873%
C74694956.627393%
D74701952.610442%

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 7624 7470 0 0 0.00% 0.00%
B 7624 7469 703 703 9.22% 9.41%
C 7624 7471 67 67 0.88% 0.90%
D 7625 7471 70 70 0.92% 0.94%

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 13 254 15624 81.2 901 880 181.6
A 3 137 9376 46.79 901 880 181.6
A 0 226 7708 37.6 901 880 181.6
B 6 159 1984775 12384.01 840 818 160.2
B 12 1 1829037 11411.88 840 818 160.2
B 4 80 189868 1180.06 840 818 160.2
C 3 233 1207142 6068.88 854 859 198.8
C 14 238 180340 902.98 854 859 198.8
C 0 10 60015 297.61 854 859 198.8
D 8 195 838523 4046.01 878 854 207.0
D 12 233 177428 852.87 878 854 207.0
D 12 218 103860 497.53 878 854 207.0

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