ASTROSAT CZTI

Data Quality Report

Orbit 06739

Creation date: 2024-06-27T15:11:08.421997
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/AS1G06_087T01_9000000926_06739cztM0_level2.evt modeM0/AS1G06_087T01_9000000926_06739cztM0_level2_quad_clean.evt
Size (bytes)1,342,123,200231,442,560
Size1.2 GB 220.7 MB
Events in quadrant A9,596,3631,451,306
Events in quadrant B8,071,6811,509,188
Events in quadrant C8,099,3811,493,208
Events in quadrant D13,700,3051,353,449

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410863
B0361703
C0365003
D0519933

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1742511146.393113%
B174253982.284075%
C174253932.255380%
D1742517349.951220%

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 18915 17428 538 538 2.84% 3.09%
B 18915 17428 17 17 0.09% 0.10%
C 18915 17428 2 2 0.01% 0.01%
D 18915 17428 1424 1424 7.53% 8.17%

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 14 111 2013604 5077.58 1933 1889 396.2
A 8 15 111668 277.08 1933 1889 396.2
A 15 234 25518 59.64 1933 1889 396.2
B 0 214 97014 248.1 1999 1947 383.2
B 4 81 92776 237.04 1999 1947 383.2
B 10 252 66450 168.33 1999 1947 383.2
C 9 16 505697 1120.78 1932 1938 449.5
C 9 247 41269 87.51 1932 1938 449.5
C 13 61 15098 29.28 1932 1938 449.5
D 2 33 3304320 7240.84 1869 1809 456.1
D 8 195 1367440 2994.18 1869 1809 456.1
D 2 152 873944 1912.18 1869 1809 456.1

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