ASTROSAT CZTI

Data Quality Report

Orbit 16866

Creation date: 2024-06-27T17:28:53.571490
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/AS1T03_034T01_9000002500_16866cztM0_level2.evt modeM0/AS1T03_034T01_9000002500_16866cztM0_level2_quad_clean.evt
Size (bytes)650,393,28067,979,520
Size620.3 MB 64.8 MB
Events in quadrant A3,377,467414,687
Events in quadrant B3,447,589418,972
Events in quadrant C3,238,799407,773
Events in quadrant D9,178,774348,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143832
B0143221
C0138221
D0319911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6715971.444527%
B67151061.578555%
C67151231.831720%
D6715183727.356664%

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 7221 6717 5 5 0.07% 0.07%
B 7221 6717 0 0 0.00% 0.00%
C 7221 6717 1 1 0.01% 0.01%
D 7221 6717 1306 1306 18.09% 19.44%

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 0 23 125476 738.85 829 811 168.7
A 15 174 54399 317.6 829 811 168.7
A 0 226 14835 83.11 829 811 168.7
B 15 35 61032 376.22 825 803 160.1
B 0 229 56965 350.82 825 803 160.1
B 4 216 31399 191.12 825 803 160.1
C 14 238 120998 635.72 798 805 189.1
C 13 61 5612 25.42 798 805 189.1
C 7 247 5375 24.17 798 805 189.1
D 1 52 6275964 35430.54 721 698 177.1
D 10 70 113180 635.08 721 698 177.1
D 2 234 29535 162.82 721 698 177.1

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