ASTROSAT CZTI

Data Quality Report

Orbit 11744

Creation date: 2024-06-27T16:17:53.362149
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_167T04_9000001734_11744cztM0_level2.evt modeM0/AS1A04_167T04_9000001734_11744cztM0_level2_quad_clean.evt
Size (bytes)594,135,36098,409,600
Size566.6 MB 93.9 MB
Events in quadrant A3,873,375620,371
Events in quadrant B4,836,707615,803
Events in quadrant C3,303,856640,394
Events in quadrant D5,486,060596,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161053
B0191042
C0148922
D0214932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72751311.800687%
B72753274.494845%
C7275480.659794%
D72752803.848797%

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 7566 7278 3 3 0.04% 0.04%
B 7566 7278 118 118 1.56% 1.62%
C 7566 7278 0 0 0.00% 0.00%
D 7566 7278 159 159 2.10% 2.18%

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 8 15 149606 840.11 862 842 177.1
A 1 162 130831 734.08 862 842 177.1
A 1 178 62629 348.93 862 842 177.1
B 4 239 743039 4548.51 851 828 163.2
B 15 204 341138 2085.53 851 828 163.2
B 11 51 153109 933.23 851 828 163.2
C 14 234 12451 59.08 842 848 196.4
C 13 61 6160 27.05 842 848 196.4
C 8 128 3803 15.05 842 848 196.4
D 8 195 1048288 5189.98 832 809 201.8
D 1 52 914226 4525.74 832 809 201.8
D 5 222 163301 805.1 832 809 201.8

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