ASTROSAT CZTI

Data Quality Report

Orbit 24398

Creation date: 2024-06-27T19:05:34.177585
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/AS1A08_008T01_9000003596_24398cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24398cztM0_level2_quad_clean.evt
Size (bytes)1,206,789,120275,198,400
Size1.1 GB 262.4 MB
Events in quadrant A8,283,6591,798,523
Events in quadrant B8,451,9471,821,965
Events in quadrant C9,114,3891,750,230
Events in quadrant D9,475,0711,719,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366673
B0368873
C0388533
D0402483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180781700.940370%
B180791871.034349%
C180792731.510039%
D180792261.250069%

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 19883 18081 0 0 0.00% 0.00%
B 19884 18082 5 5 0.03% 0.03%
C 19884 18082 3 3 0.02% 0.02%
D 19884 18082 57 57 0.29% 0.32%

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 13 254 30252 65.37 2148 2101 430.6
A 3 137 19638 40.72 2148 2101 430.6
A 0 226 18215 37.42 2148 2101 430.6
B 12 111 50179 118.7 2131 2074 405.3
B 11 111 45097 106.16 2131 2074 405.3
B 4 52 42794 100.47 2131 2074 405.3
C 7 247 675683 1421.19 2048 2055 474.0
C 14 238 327898 687.45 2048 2055 474.0
C 2 16 95840 197.86 2048 2055 474.0
D 1 52 1384294 2751.87 2078 2014 502.3
D 8 195 109485 213.95 2078 2014 502.3
D 2 234 91387 177.92 2078 2014 502.3

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