ASTROSAT CZTI

Data Quality Report

Orbit 29789

Creation date: 2024-06-27T20:07:45.897879
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/AS1T03_291T01_9000004278_29789cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29789cztM0_level2_quad_clean.evt
Size (bytes)643,795,20079,977,600
Size614.0 MB 76.3 MB
Events in quadrant A3,625,175521,053
Events in quadrant B5,768,050518,245
Events in quadrant C3,597,820483,974
Events in quadrant D6,076,304454,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148512
B0213722
C0146392
D0227273

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63671061.664834%
B63672373.722318%
C63671442.261662%
D63665919.283695%

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 7682 6368 0 0 0.00% 0.00%
B 7682 6368 18 18 0.23% 0.28%
C 7682 6368 6 6 0.08% 0.09%
D 7681 6367 514 514 6.69% 8.07%

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 14375 74.14 936 921 181.5
A 13 254 12099 61.6 936 921 181.5
A 0 226 8189 40.05 936 921 181.5
B 6 159 1871415 11177.26 919 903 167.3
B 0 229 238617 1420.46 919 903 167.3
B 15 32 38910 227.11 919 903 167.3
C 14 238 146063 726.14 868 876 199.9
C 10 22 51167 251.53 868 876 199.9
C 2 114 15363 72.46 868 876 199.9
D 7 80 2290457 11520.82 853 833 198.7
D 8 195 474980 2385.79 853 833 198.7
D 2 234 28118 137.29 853 833 198.7

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