ASTROSAT CZTI

Data Quality Report

Orbit 20631

Creation date: 2024-06-27T18:17:40.433924
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/AS1A05_007T06_9000003050_20631cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20631cztM0_level2_quad_clean.evt
Size (bytes)586,716,480114,215,040
Size559.5 MB 108.9 MB
Events in quadrant A3,576,917754,024
Events in quadrant B3,907,980748,324
Events in quadrant C3,831,894729,449
Events in quadrant D5,932,084693,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01604
B01602
C01604
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016342403
B017188228
C016747220
D023264277

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7652470.614219%
B7669871.134437%
C76701161.512386%
D76676208.086605%

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 8581 7708 4 4 0.05% 0.05%
B 8581 7726 10 10 0.12% 0.13%
C 8580 7739 1 1 0.01% 0.01%
D 8580 7736 470 470 5.48% 6.08%

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 5 16 68042 366.16 907 885 183.4
A 12 16 11981 60.5 907 885 183.4
A 12 194 8569 41.9 907 885 183.4
B 4 216 153498 880.35 906 881 173.4
B 7 220 75853 432.47 906 881 173.4
B 0 190 27315 152.48 906 881 173.4
C 8 208 232661 1115.35 882 886 207.8
C 14 238 136030 650.34 882 886 207.8
C 3 233 15144 68.61 882 886 207.8
D 1 52 2001561 9485.64 864 837 210.9
D 1 20 429729 2033.42 864 837 210.9
D 13 153 123989 583.88 864 837 210.9

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