ASTROSAT CZTI

Data Quality Report

Orbit 00986

Creation date: 2024-06-27T14:05:44.399884
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/AS1P01_998T01_9000000188_00986cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00986cztM0_level2_quad_clean.evt
Size (bytes)1,026,910,08093,484,800
Size979.3 MB 89.2 MB
Events in quadrant A6,982,979621,567
Events in quadrant B7,576,794615,761
Events in quadrant C7,296,320601,024
Events in quadrant D8,839,999566,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250640
B0268560
C0259920
D0306740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A610420.032765%
B6104160.262123%
C610370.114698%
D61033415.587416%

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 7159 6105 102 102 1.42% 1.67%
B 7159 6105 225 225 3.14% 3.69%
C 7158 6104 136 136 1.90% 2.23%
D 7157 6103 1043 1043 14.57% 17.09%

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 11 242 9797 18.37 1813 1821 434.1
A 12 189 8778 16.02 1813 1821 434.1
A 11 79 7988 14.2 1813 1821 434.1
B 8 234 85909 189.18 1904 1911 444.0
B 8 38 81654 179.59 1904 1911 444.0
B 7 221 61669 134.58 1904 1911 444.0
C 15 241 260682 532.22 1761 1821 486.4
C 9 52 90734 182.8 1761 1821 486.4
C 3 79 39165 76.78 1761 1821 486.4
D 1 4 1297282 2567.9 1643 1707 504.5
D 12 188 1168092 2311.84 1643 1707 504.5
D 13 85 35090 66.17 1643 1707 504.5

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