ASTROSAT CZTI

Data Quality Report

Orbit 06316

Creation date: 2024-06-27T15:05:32.411587
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/AS1A02_070T01_9000000832_06316cztM0_level2.evt modeM0/AS1A02_070T01_9000000832_06316cztM0_level2_quad_clean.evt
Size (bytes)583,997,760101,577,600
Size556.9 MB 96.9 MB
Events in quadrant A3,933,901638,693
Events in quadrant B4,149,217646,509
Events in quadrant C3,517,045651,742
Events in quadrant D5,565,773605,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171003
B0175982
C0158342
D0218752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76731702.215561%
B76733063.988010%
C7673520.677701%
D76733264.248664%

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 8172 7672 14 14 0.17% 0.18%
B 8172 7672 124 124 1.52% 1.62%
C 8172 7673 4 4 0.05% 0.05%
D 8172 7672 169 169 2.07% 2.20%

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 15 236 264433 1432.9 883 864 183.9
A 8 15 148866 804.62 883 864 183.9
A 13 251 62869 337.09 883 864 183.9
B 3 64 603238 3499.23 891 872 172.1
B 4 81 68815 394.69 891 872 172.1
B 12 111 16841 92.77 891 872 172.1
C 1 16 93057 459.25 863 867 200.7
C 8 128 17539 83.05 863 867 200.7
C 9 54 13798 64.42 863 867 200.7
D 12 221 911705 4296.82 848 817 212.0
D 2 63 653544 3079.03 848 817 212.0
D 12 220 260565 1225.28 848 817 212.0

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