ASTROSAT CZTI

Data Quality Report

Orbit 20421

Creation date: 2024-06-27T18:15:12.040175
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_188T01_9000003018_20421cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20421cztM0_level2_quad_clean.evt
Size (bytes)502,712,64086,466,240
Size479.4 MB 82.5 MB
Events in quadrant A3,162,183563,240
Events in quadrant B3,255,972574,900
Events in quadrant C3,114,294540,736
Events in quadrant D5,268,630503,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133242
B0136302
C0131102
D0198533

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247330.528254%
B6248350.560179%
C6248410.656210%
D62474607.363534%

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 7477 6248 5 5 0.07% 0.08%
B 7478 6249 1 1 0.01% 0.02%
C 7478 6249 0 0 0.00% 0.00%
D 7477 6248 399 399 5.34% 6.39%

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 5 16 48692 300.32 805 791 159.5
A 11 29 7273 40.64 805 791 159.5
A 0 226 6959 38.67 805 791 159.5
B 10 245 36265 237.13 802 785 149.6
B 0 189 34195 223.29 802 785 149.6
B 0 197 25174 163.0 802 785 149.6
C 14 238 122013 690.7 760 767 175.5
C 7 220 13380 71.85 760 767 175.5
C 3 233 9509 49.8 760 767 175.5
D 2 16 1244614 7017.73 740 720 177.3
D 1 52 657756 3706.83 740 720 177.3
D 13 153 410275 2310.6 740 720 177.3

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