ASTROSAT CZTI

Data Quality Report

Orbit 09455

Creation date: 2024-06-27T15:46:20.705312
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_177T01_9000001344_09455cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09455cztM0_level2_quad_clean.evt
Size (bytes)485,328,960100,702,080
Size462.8 MB 96.0 MB
Events in quadrant A3,601,030646,417
Events in quadrant B3,570,008642,485
Events in quadrant C3,302,596629,537
Events in quadrant D3,725,234619,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155373
B0155422
C0151262
D0162332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7353420.571195%
B7353390.530396%
C7353120.163199%
D7353530.720794%

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 8558 7355 1 1 0.01% 0.01%
B 8558 7355 3 3 0.04% 0.04%
C 8558 7355 6 6 0.07% 0.08%
D 8558 7355 28 28 0.33% 0.38%

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 103016 571.16 874 854 178.9
A 1 162 65212 359.81 874 854 178.9
A 1 178 24189 130.46 874 854 178.9
B 0 214 58997 347.0 871 848 167.6
B 5 255 51411 301.73 871 848 167.6
B 0 219 30699 178.14 871 848 167.6
C 4 254 25693 127.05 837 841 195.6
C 13 61 6501 28.94 837 841 195.6
C 14 234 5622 24.44 837 841 195.6
D 8 195 192495 900.33 836 814 212.9
D 7 71 144219 673.58 836 814 212.9
D 1 52 82174 382.15 836 814 212.9

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