ASTROSAT CZTI

Data Quality Report

Orbit 17662

Creation date: 2024-06-27T17:39:17.030552
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_208T01_9000002614_17662cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17662cztM0_level2_quad_clean.evt
Size (bytes)517,919,04087,981,120
Size493.9 MB 83.9 MB
Events in quadrant A3,464,985553,092
Events in quadrant B3,422,473563,802
Events in quadrant C4,108,615539,766
Events in quadrant D4,227,354533,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146091
B0144281
C0165721
D0169851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68111772.598737%
B68121722.524956%
C68112002.936426%
D68113384.962561%

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 7246 6811 1 1 0.01% 0.01%
B 7247 6813 9 9 0.12% 0.13%
C 7246 6811 0 0 0.00% 0.00%
D 7246 6811 179 179 2.47% 2.63%

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 14 237 276663 1622.54 829 811 170.0
A 0 226 7194 37.54 829 811 170.0
A 12 194 6160 31.46 829 811 170.0
B 7 220 80796 500.41 825 805 159.9
B 0 230 40120 245.95 825 805 159.9
B 0 229 23371 141.17 825 805 159.9
C 3 233 884184 4731.57 795 801 186.7
C 14 238 120833 642.91 795 801 186.7
C 13 61 5635 25.89 795 801 186.7
D 1 52 644972 3312.63 803 780 194.5
D 10 70 158837 812.78 803 780 194.5
D 5 222 151495 775.02 803 780 194.5

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