ASTROSAT CZTI

Data Quality Report

Orbit 18845

Creation date: 2024-06-27T17:55:34.994917
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/AS1A05_194T13_9000002814_18845cztM0_level2.evt modeM0/AS1A05_194T13_9000002814_18845cztM0_level2_quad_clean.evt
Size (bytes)502,263,36065,620,800
Size479.0 MB 62.6 MB
Events in quadrant A3,515,293401,281
Events in quadrant B3,617,300405,568
Events in quadrant C3,426,754376,856
Events in quadrant D4,224,336362,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141552
B0145792
C0137872
D0164052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301651.031582%
B6301831.317251%
C6300791.253968%
D63002924.634921%

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 7636 6302 2 2 0.03% 0.03%
B 7636 6302 5 5 0.07% 0.08%
C 7635 6301 0 0 0.00% 0.00%
D 7635 6301 190 190 2.49% 3.02%

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 9 143 17699 94.46 897 883 178.0
A 0 23 14851 78.46 897 883 178.0
A 10 1 10304 52.92 897 883 178.0
B 0 197 53577 319.54 892 874 164.9
B 0 229 25019 146.39 892 874 164.9
B 12 111 18858 109.04 892 874 164.9
C 14 238 133825 691.33 835 843 192.4
C 3 233 19016 94.48 835 843 192.4
C 0 207 8141 37.94 835 843 192.4
D 12 1 327361 1635.34 833 809 199.7
D 1 52 310599 1551.39 833 809 199.7
D 1 20 309696 1546.87 833 809 199.7

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