ASTROSAT CZTI

Data Quality Report

Orbit 20293

Creation date: 2024-06-27T18:13:31.473514
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_174T01_9000003008_20293cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20293cztM0_level2_quad_clean.evt
Size (bytes)456,390,720100,275,840
Size435.2 MB 95.6 MB
Events in quadrant A3,415,085649,999
Events in quadrant B3,365,195669,067
Events in quadrant C3,357,373647,243
Events in quadrant D3,258,292632,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138122
B0137832
C0137122
D0135172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269460.733769%
B6269761.212315%
C6269961.531345%
D6269460.733769%

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 7594 6270 8 8 0.11% 0.13%
B 7594 6270 10 10 0.13% 0.16%
C 7594 6270 0 0 0.00% 0.00%
D 7594 6270 4 4 0.05% 0.06%

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 8 205 113871 680.1 834 819 166.2
A 4 2 41516 244.83 834 819 166.2
A 14 238 24326 141.41 834 819 166.2
B 7 220 84197 539.42 832 811 154.6
B 12 111 17901 110.55 832 811 154.6
B 11 111 15710 96.38 832 811 154.6
C 14 238 129922 680.45 819 827 189.7
C 0 207 10090 48.82 819 827 189.7
C 3 233 9655 46.53 819 827 189.7
D 1 52 81437 399.17 831 810 202.0
D 2 120 29020 139.66 831 810 202.0
D 2 234 24552 117.54 831 810 202.0

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