ASTROSAT CZTI

Data Quality Report

Orbit 23811

Creation date: 2024-06-27T18:58:59.841288
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/AS1A07_113T01_9000003526_23811cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23811cztM0_level2_quad_clean.evt
Size (bytes)622,261,44090,339,840
Size593.4 MB 86.2 MB
Events in quadrant A3,344,023581,211
Events in quadrant B3,773,310593,660
Events in quadrant C3,573,215588,659
Events in quadrant D7,742,411546,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138922
B0151942
C0146382
D0273562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101510.835929%
B61011642.688084%
C61011812.966727%
D610196315.784298%

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 7496 6101 0 0 0.00% 0.00%
B 7496 6101 82 82 1.09% 1.34%
C 7496 6101 13 13 0.17% 0.21%
D 7496 6101 662 662 8.83% 10.85%

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 12 96 10358 55.07 865 852 172.6
A 13 254 10265 54.53 865 852 172.6
A 0 226 7518 38.62 865 852 172.6
B 3 64 395232 2492.32 861 845 158.2
B 12 111 17983 108.3 861 845 158.2
B 11 111 16229 97.22 861 845 158.2
C 14 238 139684 709.8 854 867 195.6
C 0 10 94122 476.83 854 867 195.6
C 5 4 6564 29.13 854 867 195.6
D 8 195 2585370 13012.63 824 802 198.6
D 1 52 1065263 5359.28 824 802 198.6
D 13 174 556305 2796.81 824 802 198.6

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