ASTROSAT CZTI

Data Quality Report

Orbit 30494

Creation date: 2024-06-27T20:16:00.168122
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/AS1A10_053T22_9000004384_30494cztM0_level2.evt modeM0/AS1A10_053T22_9000004384_30494cztM0_level2_quad_clean.evt
Size (bytes)165,582,72028,062,720
Size157.9 MB 26.8 MB
Events in quadrant A737,052212,627
Events in quadrant B1,113,543211,895
Events in quadrant C857,629199,449
Events in quadrant D2,209,710121,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029871
B042141
C034261
D074471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1387110.793079%
B1387141.009373%
C1386564.040404%
D138676455.122655%

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 1387 1387 0 0 0.00% 0.00%
B 1387 1387 0 0 0.00% 0.00%
C 1386 1386 13 13 0.94% 0.94%
D 1386 1386 712 712 51.37% 51.37%

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 8 192 10910 278.17 187 184 38.6
A 13 254 2486 59.7 187 184 38.6
A 12 96 2140 50.73 187 184 38.6
B 6 159 380647 10284.9 183 179 37.0
B 0 230 5618 147.03 183 179 37.0
B 0 229 5457 142.68 183 179 37.0
C 0 10 49157 1127.08 179 180 43.5
C 3 233 41181 943.53 179 180 43.5
C 10 22 36222 829.42 179 180 43.5
D 12 218 880587 30238.47 116 113 29.1
D 12 250 396923 13627.8 116 113 29.1
D 12 202 158094 5425.6 116 113 29.1

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