ASTROSAT CZTI

Data Quality Report

Orbit 01117

Creation date: 2024-06-27T14:07:47.503210
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/AS1P01_997T01_9000000214_01117cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01117cztM0_level2_quad_clean.evt
Size (bytes)1,076,558,400100,601,280
Size1.0 GB 95.9 MB
Events in quadrant A7,890,321662,677
Events in quadrant B8,466,432655,603
Events in quadrant C8,162,898630,552
Events in quadrant D7,640,845631,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282072
B0299201
C0290371
D0275001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682550.823107%
B6682320.478899%
C6682871.302005%
D66821281.915594%

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 7287 6683 249 249 3.42% 3.73%
B 7287 6684 313 313 4.30% 4.68%
C 7287 6683 295 295 4.05% 4.41%
D 7287 6683 313 313 4.30% 4.68%

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 12 243 23971 44.31 2045 2058 494.5
A 10 229 10545 17.16 2045 2058 494.5
A 0 253 8361 12.74 2045 2058 494.5
B 2 32 266866 533.13 2102 2109 496.6
B 5 249 53828 104.15 2102 2109 496.6
B 0 230 52553 101.58 2102 2109 496.6
C 15 241 332500 617.21 1933 2001 535.5
C 5 234 208884 386.36 1933 2001 535.5
C 3 79 28357 49.22 1933 2001 535.5
D 10 125 153832 273.64 1949 1981 554.9
D 2 16 80811 142.05 1949 1981 554.9
D 13 73 74949 131.49 1949 1981 554.9

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