ASTROSAT CZTI

Data Quality Report

Orbit 23101

Creation date: 2024-06-27T18:49:56.688674
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/AS1A07_138T05_9000003410_23101cztM0_level2.evt modeM0/AS1A07_138T05_9000003410_23101cztM0_level2_quad_clean.evt
Size (bytes)310,988,16066,456,000
Size296.6 MB 63.4 MB
Events in quadrant A2,336,103428,537
Events in quadrant B2,212,254443,625
Events in quadrant C2,293,953429,010
Events in quadrant D2,293,272418,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096711
B092871
C095331
D097961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4142761.834862%
B4142651.569290%
C41421012.438436%
D41421032.486721%

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 5522 4143 2 2 0.04% 0.05%
B 5522 4142 1 1 0.02% 0.02%
C 5522 4143 5 5 0.09% 0.12%
D 5522 4143 31 31 0.56% 0.75%

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 6 16 202349 1802.31 553 543 112.0
A 13 254 5985 48.6 553 543 112.0
A 0 226 4798 38.0 553 543 112.0
B 0 189 17456 157.47 557 543 107.4
B 12 111 12271 109.2 557 543 107.4
B 0 190 11335 100.48 557 543 107.4
C 0 10 94054 738.94 540 544 126.5
C 14 238 85536 671.63 540 544 126.5
C 0 207 6204 44.73 540 544 126.5
D 12 233 75515 570.22 542 529 131.5
D 1 52 47141 354.46 542 529 131.5
D 13 153 45270 340.23 542 529 131.5

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