ASTROSAT CZTI

Data Quality Report

Orbit 35927

Creation date: 2022-06-09T02:19:10.292321
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/AS1A11_080T01_9000005146_35927cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35927cztM0_level2_quad_clean.evt
Size (bytes)478,598,40077,135,040
Size456.4 MB 73.6 MB
Events in quadrant A3,806,007505,089
Events in quadrant B3,505,048510,022
Events in quadrant C3,158,560483,228
Events in quadrant D3,669,115470,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145253
B0135122
C0123502
D0142372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52491272.419508%
B52492895.505811%
C52491392.648123%
D52492284.343685%

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 7281 5250 105 105 1.44% 2.00%
B 7281 5250 202 202 2.77% 3.85%
C 7281 5250 109 109 1.50% 2.08%
D 7281 5250 168 168 2.31% 3.20%

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 15 169 922079 6811.75 677 667 135.3
A 10 83 162017 1192.82 677 667 135.3
A 9 143 77565 568.49 677 667 135.3
B 5 172 769966 6358.13 649 636 121.0
B 5 255 103383 849.15 649 636 121.0
B 4 67 38424 312.3 649 636 121.0
C 0 10 396617 2708.58 634 643 146.2
C 15 214 221255 1509.05 634 643 146.2
C 0 207 62912 425.94 634 643 146.2
D 13 249 371874 2403.09 637 621 154.5
D 8 195 269880 1742.89 637 621 154.5
D 10 118 169868 1095.52 637 621 154.5

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