ASTROSAT CZTI

Data Quality Report

Orbit 16109

Creation date: 2024-06-27T17:18:06.902611
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_209T01_9000002378_16109cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16109cztM0_level2_quad_clean.evt
Size (bytes)498,101,76065,142,720
Size475.0 MB 62.1 MB
Events in quadrant A3,567,994388,462
Events in quadrant B3,581,982391,985
Events in quadrant C3,671,731373,332
Events in quadrant D3,828,588371,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146193
B0147702
C0149152
D0154222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6409971.513497%
B64091011.575909%
C64091382.153222%
D64091392.168825%

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 7700 6410 11 11 0.14% 0.17%
B 7700 6410 1 1 0.01% 0.02%
C 7700 6410 22 22 0.29% 0.34%
D 7700 6410 96 96 1.25% 1.50%

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 15 174 120016 667.79 897 883 178.4
A 0 226 8040 40.12 897 883 178.4
A 12 194 6604 32.07 897 883 178.4
B 0 189 41954 244.74 888 870 167.9
B 4 173 23700 136.0 888 870 167.9
B 0 244 19293 109.75 888 870 167.9
C 9 236 199743 1018.68 851 861 195.2
C 14 238 134130 682.61 851 861 195.2
C 3 233 17321 84.31 851 861 195.2
D 1 52 483232 2275.29 874 852 212.0
D 2 234 22782 103.44 874 852 212.0
D 13 172 20320 91.83 874 852 212.0

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