ASTROSAT CZTI

Data Quality Report

Orbit 20650

Creation date: 2024-06-27T18:17:51.403176
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_082T09_9000003054_20650cztM0_level2.evt modeM0/AS1A05_082T09_9000003054_20650cztM0_level2_quad_clean.evt
Size (bytes)508,423,68089,236,800
Size484.9 MB 85.1 MB
Events in quadrant A3,506,540573,910
Events in quadrant B3,552,485574,880
Events in quadrant C3,351,296547,039
Events in quadrant D4,526,313533,214

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147172
B0146512
C0141632
D0178932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67971331.956746%
B67971131.662498%
C67971271.868471%
D67972123.119023%

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 7752 6797 23 23 0.30% 0.34%
B 7752 6797 5 5 0.06% 0.07%
C 7752 6797 3 3 0.04% 0.04%
D 7752 6797 120 120 1.55% 1.77%

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 175813 1003.06 860 841 174.4
A 13 252 17344 94.6 860 841 174.4
A 0 226 7662 39.1 860 841 174.4
B 7 220 42514 253.93 851 829 164.2
B 0 189 34907 207.59 851 829 164.2
B 4 216 32037 190.11 851 829 164.2
C 14 238 127744 666.36 811 816 190.5
C 7 247 42874 220.8 811 816 190.5
C 3 233 6273 28.65 811 816 190.5
D 1 52 929286 4618.32 827 803 201.0
D 7 238 177591 879.35 827 803 201.0
D 2 165 100263 494.72 827 803 201.0

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