ASTROSAT CZTI

Data Quality Report

Orbit 24028

Creation date: 2024-06-27T19:01:18.588901
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_165T01_9000003558_24028cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24028cztM0_level2_quad_clean.evt
Size (bytes)507,104,640155,283,840
Size483.6 MB 148.1 MB
Events in quadrant A3,568,8931,083,430
Events in quadrant B3,865,6151,093,573
Events in quadrant C3,700,4511,036,156
Events in quadrant D3,770,0181,025,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147612
B0160202
C0152972
D0154692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6671931.394094%
B6672931.393885%
C66721852.772782%
D6672781.169065%

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 7956 6672 0 0 0.00% 0.00%
B 7957 6673 3 3 0.04% 0.04%
C 7957 6673 33 33 0.41% 0.49%
D 7957 6673 7 7 0.09% 0.10%

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 10604 53.64 924 910 180.7
A 0 226 7998 39.22 924 910 180.7
A 3 137 6949 33.41 924 910 180.7
B 0 197 208140 1262.81 910 892 164.1
B 0 189 24498 143.84 910 892 164.1
B 7 202 22886 134.01 910 892 164.1
C 0 239 146927 741.86 872 881 196.9
C 14 238 143810 726.02 872 881 196.9
C 13 61 6133 26.68 872 881 196.9
D 8 195 147105 691.55 898 877 211.5
D 12 218 96282 451.19 898 877 211.5
D 2 234 31386 144.28 898 877 211.5

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