ASTROSAT CZTI

Data Quality Report

Orbit 36478

Creation date: 2022-06-27T19:00:37.941386
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_049T03_9000005208_36478cztM0_level2.evt modeM0/AS1A11_049T03_9000005208_36478cztM0_level2_quad_clean.evt
Size (bytes)432,599,04095,483,520
Size412.6 MB 91.1 MB
Events in quadrant A2,688,225664,136
Events in quadrant B3,211,507646,528
Events in quadrant C3,532,280620,958
Events in quadrant D3,332,474612,044

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109843
B0127142
C0137212
D0131862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496390.181342%
B49631523.062664%
C49631813.646988%
D49631773.566391%

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 7055 4964 1 1 0.01% 0.02%
B 7055 4964 106 106 1.50% 2.14%
C 7055 4964 129 129 1.83% 2.60%
D 7055 4964 123 123 1.74% 2.48%

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 191063 1496.92 637 626 127.2
A 9 143 22299 170.36 637 626 127.2
A 13 6 11582 86.12 637 626 127.2
B 5 172 402602 3495.65 611 599 115.0
B 0 189 114043 986.46 611 599 115.0
B 5 255 106986 925.1 611 599 115.0
C 0 10 940762 6936.01 589 594 135.5
C 15 214 215004 1581.79 589 594 135.5
C 0 207 44867 326.62 589 594 135.5
D 13 249 533849 3663.47 606 591 145.6
D 10 199 85498 583.31 606 591 145.6
D 12 6 83628 570.46 606 591 145.6

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