ASTROSAT CZTI

Data Quality Report

Orbit 04156

Creation date: 2024-06-27T14:38:10.521806
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/AS1G05_240T01_9000000536_04156cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04156cztM0_level2_quad_clean.evt
Size (bytes)446,512,32066,602,880
Size425.8 MB 63.5 MB
Events in quadrant A3,239,810396,361
Events in quadrant B3,525,175397,141
Events in quadrant C3,021,559390,427
Events in quadrant D3,289,318374,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138653
B0147802
C0135412
D0144262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6576861.307786%
B65761532.326642%
C6576590.897202%
D65761051.596715%

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 7541 6577 3 3 0.04% 0.05%
B 7541 6577 55 55 0.73% 0.84%
C 7541 6577 3 3 0.04% 0.05%
D 7541 6577 51 51 0.68% 0.78%

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 0 199 97021 594.24 790 775 162.0
A 3 1 42899 260.08 790 775 162.0
A 8 15 35380 213.66 790 775 162.0
B 10 16 351774 2280.98 798 778 153.9
B 0 183 22366 140.29 798 778 153.9
B 4 81 21465 134.44 798 778 153.9
C 7 222 30969 169.99 763 767 177.7
C 13 61 6187 30.51 763 767 177.7
C 8 128 3898 17.62 763 767 177.7
D 10 172 247040 1339.84 761 739 183.8
D 13 239 48229 258.34 761 739 183.8
D 2 14 41114 219.63 761 739 183.8

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