ASTROSAT CZTI

Data Quality Report

Orbit 37081

Creation date: 2024-06-27T21:35:19.412719
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/AS1A09_138T04_9000005282_37081cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37081cztM0_level2_quad_clean.evt
Size (bytes)464,886,72066,936,960
Size443.4 MB 63.8 MB
Events in quadrant A2,867,814419,761
Events in quadrant B4,623,551403,754
Events in quadrant C2,786,528416,856
Events in quadrant D3,421,699395,166

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119243
B0174312
C0115892
D0139292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5591160.286174%
B55914648.299052%
C5591130.232517%
D55911382.468253%

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 7203 5592 8 8 0.11% 0.14%
B 7203 5592 351 351 4.87% 6.28%
C 7203 5592 5 5 0.07% 0.09%
D 7203 5592 129 129 1.79% 2.31%

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 10 83 273595 2088.21 648 636 130.7
A 7 3 38600 290.43 648 636 130.7
A 9 143 31590 236.81 648 636 130.7
B 5 184 1580514 13155.32 621 605 120.1
B 5 172 228158 1894.75 621 605 120.1
B 4 171 121290 1004.9 621 605 120.1
C 15 214 237133 1580.98 631 635 149.6
C 0 10 78101 517.86 631 635 149.6
C 12 249 4461 25.58 631 635 149.6
D 1 47 220145 1424.88 629 612 154.1
D 1 52 188494 1219.45 629 612 154.1
D 2 249 147525 953.54 629 612 154.1

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