ASTROSAT CZTI

Data Quality Report

Orbit 19112

Creation date: 2024-06-27T17:59:11.077226
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/AS1T03_098T01_9000002836_19112cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19112cztM0_level2_quad_clean.evt
Size (bytes)543,409,92090,388,800
Size518.2 MB 86.2 MB
Events in quadrant A3,093,243575,996
Events in quadrant B3,644,098577,387
Events in quadrant C3,538,944570,987
Events in quadrant D5,721,648540,807

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137761
B0152541
C0148031
D0215342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6776861.269185%
B67772283.364320%
C67771111.637893%
D67765868.648170%

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 7136 6777 2 2 0.03% 0.03%
B 7137 6778 124 124 1.74% 1.83%
C 7137 6778 7 7 0.10% 0.10%
D 7136 6777 656 656 9.19% 9.68%

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 7389 40.61 800 781 162.7
A 0 226 6882 37.49 800 781 162.7
A 11 47 6331 34.11 800 781 162.7
B 10 245 342619 2244.44 788 768 152.3
B 7 220 97550 635.43 788 768 152.3
B 3 112 44325 285.98 788 768 152.3
C 3 233 389693 2143.64 766 770 181.4
C 14 238 118665 649.81 766 770 181.4
C 0 207 31060 166.95 766 770 181.4
D 7 238 1591322 8542.93 761 739 186.2
D 12 218 702439 3768.79 761 739 186.2
D 11 176 221211 1184.14 761 739 186.2

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