ASTROSAT CZTI

Data Quality Report

Orbit 19907

Creation date: 2024-06-27T18:08:37.297898
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_064T01_9000002964_19907cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19907cztM0_level2_quad_clean.evt
Size (bytes)709,807,680111,568,320
Size676.9 MB 106.4 MB
Events in quadrant A3,220,172747,690
Events in quadrant B3,567,328757,180
Events in quadrant C4,339,301737,220
Events in quadrant D9,880,160631,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147621
B0155241
C0176531
D0344261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7243580.800773%
B72431311.808643%
C72431922.650835%
D7243170023.470937%

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 7528 7243 0 0 0.00% 0.00%
B 7528 7244 42 42 0.56% 0.58%
C 7528 7245 48 48 0.64% 0.66%
D 7528 7244 1714 1714 22.77% 23.66%

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 26663 153.47 828 808 168.5
A 0 226 7262 38.31 828 808 168.5
A 3 137 6582 34.27 828 808 168.5
B 0 228 92347 581.91 830 811 157.3
B 7 220 88063 554.68 830 811 157.3
B 0 197 36134 224.55 830 811 157.3
C 9 221 1024744 5466.06 804 809 187.3
C 14 238 124166 658.52 804 809 187.3
C 0 207 30489 158.44 804 809 187.3
D 2 184 6165936 34154.19 742 719 180.5
D 7 38 468687 2592.46 742 719 180.5
D 12 233 121039 666.55 742 719 180.5

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