ASTROSAT CZTI

Data Quality Report

Orbit 27240

Creation date: 2024-06-27T19:38:05.340590
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_243T01_9000003918_27240cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27240cztM0_level2_quad_clean.evt
Size (bytes)467,640,000114,220,800
Size446.0 MB 108.9 MB
Events in quadrant A3,244,224788,237
Events in quadrant B3,361,776792,324
Events in quadrant C3,161,109735,040
Events in quadrant D3,994,027730,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135580
B0138930
C0132150
D0158310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5916791.335362%
B59161001.690331%
C59171151.943552%
D59171823.075883%

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 7216 5917 0 0 0.00% 0.00%
B 7216 5917 12 12 0.17% 0.20%
C 7217 5918 0 0 0.00% 0.00%
D 7217 5918 124 124 1.72% 2.10%

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 8199 43.9 837 826 168.0
A 0 226 7315 38.63 837 826 168.0
A 3 137 7113 37.43 837 826 168.0
B 3 64 70380 455.73 816 799 152.7
B 15 32 32808 209.65 816 799 152.7
B 15 33 29892 190.55 816 799 152.7
C 14 238 127517 707.65 775 782 179.1
C 15 208 10707 55.42 775 782 179.1
C 13 61 5241 24.9 775 782 179.1
D 12 233 532681 2758.67 794 777 192.8
D 1 52 240925 1245.5 794 777 192.8
D 2 250 154742 798.52 794 777 192.8

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