ASTROSAT CZTI

Data Quality Report

Orbit 13493

Creation date: 2024-06-27T16:41:38.620225
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/AS1A04_103T01_9000001988_13493cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13493cztM0_level2_quad_clean.evt
Size (bytes)505,681,920101,848,320
Size482.3 MB 97.1 MB
Events in quadrant A3,542,062646,489
Events in quadrant B3,925,251654,875
Events in quadrant C3,577,013643,052
Events in quadrant D3,757,223614,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156833
B0166952
C0157222
D0162472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7557961.270345%
B75571762.328967%
C7557590.780733%
D7557460.608707%

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 9088 7559 0 0 0.00% 0.00%
B 9088 7559 29 29 0.32% 0.38%
C 9088 7559 0 0 0.00% 0.00%
D 9088 7559 6 6 0.07% 0.08%

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 1 162 16815 85.04 915 895 187.2
A 0 226 8141 38.7 915 895 187.2
A 12 194 6879 31.96 915 895 187.2
B 3 64 154761 880.17 915 893 174.8
B 10 245 69756 393.92 915 893 174.8
B 4 173 56150 316.09 915 893 174.8
C 3 233 85636 412.86 888 894 205.3
C 0 207 23387 109.58 888 894 205.3
C 13 61 6436 27.0 888 894 205.3
D 8 195 231143 1095.44 876 852 210.2
D 13 122 85302 401.71 876 852 210.2
D 2 234 40434 188.28 876 852 210.2

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