ASTROSAT CZTI

Data Quality Report

Orbit 11670

Creation date: 2024-06-27T16:16:52.287950
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/AS1T01_207T01_9000001720_11670cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11670cztM0_level2_quad_clean.evt
Size (bytes)400,844,16066,237,120
Size382.3 MB 63.2 MB
Events in quadrant A3,729,658413,233
Events in quadrant B2,824,822424,576
Events in quadrant C2,192,863422,390
Events in quadrant D3,058,726401,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144483
B0116022
C0101852
D0122502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48973366.861344%
B48972244.574229%
C48971032.103329%
D48972104.288340%

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 5433 4900 121 121 2.23% 2.47%
B 5433 4900 46 46 0.85% 0.94%
C 5433 4900 0 0 0.00% 0.00%
D 5433 4900 77 77 1.42% 1.57%

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 5 989983 8371.89 568 554 118.2
A 1 162 184901 1559.82 568 554 118.2
A 1 178 108659 914.71 568 554 118.2
B 4 239 330864 2937.92 575 559 112.4
B 3 64 110230 975.48 575 559 112.4
B 15 204 57673 508.0 575 559 112.4
C 13 61 4144 27.29 562 564 131.2
C 9 54 1540 7.44 562 564 131.2
C 14 234 1447 6.73 562 564 131.2
D 8 195 425661 3148.88 557 539 135.0
D 1 52 266450 1969.61 557 539 135.0
D 13 104 145956 1077.11 557 539 135.0

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