ASTROSAT CZTI

Data Quality Report

Orbit 20190923_A06_009T02_9000003194_level2

Creation date: 2025-12-03T21:46:50.392019
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/AS1A06_009T02_9000003194cztM0_level2.fits modeM0/AS1A06_009T02_9000003194cztM0_level2_quad_clean.evt
Size (bytes)177,160,320170,838,720
Size169.0 MB 162.9 MB
Events in quadrant A1,103,3801,060,530
Events in quadrant B1,060,9361,057,614
Events in quadrant C1,082,3521,024,118
Events in quadrant D797,870711,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393320
B0406860
C0394340
D0840030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191521280.668338%
B191521820.950292%
C191522101.096491%
D19152490025.584795%

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 20146 19151 0 0 0.00% 0.00%
B 20147 19151 0 0 0.00% 0.00%
C 20146 19151 0 0 0.00% 0.00%
D 20147 19076 0 0 0.00% 0.00%

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 29 1047 10.7 287 269 72.7
A 0 30 876 8.35 287 269 72.7
A 7 110 866 8.21 287 269 72.7
B 2 9 831 9.97 280 266 56.6
B 14 254 718 7.97 280 266 56.6
B 3 17 713 7.88 280 266 56.6
C 12 241 762 6.62 286 267 74.8
C 9 209 748 6.43 286 267 74.8
C 3 235 747 6.42 286 267 74.8
D 6 67 579 6.0 227 207 62.0
D 10 189 576 5.95 227 207 62.0
D 4 160 574 5.92 227 207 62.0

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