ASTROSAT CZTI

Data Quality Report

Orbit 20723

Creation date: 2024-06-27T18:18:46.798618
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_165T07_9000003062_20723cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20723cztM0_level2_quad_clean.evt
Size (bytes)445,680,00086,849,280
Size425.0 MB 82.8 MB
Events in quadrant A3,228,373557,245
Events in quadrant B3,449,869555,583
Events in quadrant C3,242,418532,992
Events in quadrant D3,138,288533,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135942
B0141362
C0136632
D0134512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6450360.558140%
B6449661.023414%
C6449881.364553%
D6449340.527214%

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 7575 6451 2 2 0.03% 0.03%
B 7574 6450 14 14 0.18% 0.22%
C 7574 6449 0 0 0.00% 0.00%
D 7574 6450 2 2 0.03% 0.03%

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 10 253 37515 221.17 826 809 166.0
A 8 6 8671 47.37 826 809 166.0
A 0 226 7298 39.1 826 809 166.0
B 7 220 165804 1087.06 814 797 151.8
B 0 229 25376 161.93 814 797 151.8
B 0 197 19801 125.2 814 797 151.8
C 14 238 125580 690.37 784 790 180.8
C 8 208 25933 139.09 784 790 180.8
C 9 54 18059 95.53 784 790 180.8
D 1 52 30093 153.18 803 781 191.4
D 2 234 24991 126.52 803 781 191.4
D 1 20 20961 105.46 803 781 191.4

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