ASTROSAT CZTI

Data Quality Report

Orbit 20221003_A11_082T01_9000005356_level2

Creation date: 2023-01-04T17:24:31.710560
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_082T01_9000005356cztM0_level2.fits modeM0/AS1A11_082T01_9000005356cztM0_level2_quad_clean.evt
Size (bytes)89,611,200125,965,440
Size85.5 MB 120.1 MB
Events in quadrant A552,256831,557
Events in quadrant B524,766831,426
Events in quadrant C545,096830,743
Events in quadrant D450,578679,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204700
B0224710
C0201700
D0311170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9246310.335280%
B92462492.693056%
C92461101.189704%
D92469199.939433%

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 13341 9245 0 0 0.00% 0.00%
B 13341 9243 0 0 0.00% 0.00%
C 13341 9245 0 0 0.00% 0.00%
D 13341 9235 0 0 0.00% 0.00%

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 9 19 473 9.32 144 137 36.1
A 7 110 455 8.82 144 137 36.1
A 14 95 442 8.46 144 137 36.1
B 3 80 432 10.21 139 133 29.3
B 2 9 411 9.49 139 133 29.3
B 3 17 368 8.02 139 133 29.3
C 1 81 447 8.07 144 137 38.4
C 3 202 432 7.68 144 137 38.4
C 3 203 428 7.57 144 137 38.4
D 10 189 361 6.9 129 118 35.2
D 11 66 334 6.14 129 118 35.2
D 4 160 334 6.14 129 118 35.2

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