ASTROSAT CZTI

Data Quality Report

Orbit 16266

Creation date: 2024-06-27T17:20:09.044136
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/AS1T02_112T01_9000002390_16266cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16266cztM0_level2_quad_clean.evt
Size (bytes)585,259,20066,640,320
Size558.1 MB 63.6 MB
Events in quadrant A4,196,435392,860
Events in quadrant B5,505,431389,899
Events in quadrant C3,315,756400,686
Events in quadrant D4,260,029373,960

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166443
B0206842
C0138392
D0170202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65972513.804760%
B65975508.337123%
C6597821.242989%
D65973254.926482%

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 7733 6599 148 148 1.91% 2.24%
B 7733 6599 341 341 4.41% 5.17%
C 7733 6599 0 0 0.00% 0.00%
D 7733 6599 213 213 2.75% 3.23%

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 15 174 850958 5140.16 830 814 165.4
A 14 4 100883 605.04 830 814 165.4
A 9 143 31111 183.18 830 814 165.4
B 3 112 1849584 11890.15 823 804 155.5
B 4 216 154024 985.41 823 804 155.5
B 7 220 102836 656.2 823 804 155.5
C 14 238 126689 669.81 808 815 187.9
C 3 233 30249 156.63 808 815 187.9
C 0 207 10265 50.29 808 815 187.9
D 1 52 948956 4926.61 797 776 192.5
D 10 70 233880 1211.17 797 776 192.5
D 13 112 49382 252.55 797 776 192.5

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