ASTROSAT CZTI

Data Quality Report

Orbit 18207

Creation date: 2024-06-27T17:46:45.028064
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/AS1T03_003T01_9000002712_18207cztM0_level2.evt modeM0/AS1T03_003T01_9000002712_18207cztM0_level2_quad_clean.evt
Size (bytes)500,529,60099,057,600
Size477.3 MB 94.5 MB
Events in quadrant A3,421,853655,201
Events in quadrant B3,402,938657,574
Events in quadrant C3,244,755627,780
Events in quadrant D4,654,137611,978

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138992
B0137912
C0133652
D0180232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6414661.028999%
B6414620.966635%
C6414610.951045%
D64142013.133770%

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 7684 6415 11 11 0.14% 0.17%
B 7684 6415 3 3 0.04% 0.05%
C 7684 6415 0 0 0.00% 0.00%
D 7684 6415 150 150 1.95% 2.34%

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 15 174 159688 934.89 848 833 169.9
A 0 226 7585 39.74 848 833 169.9
A 12 194 6289 32.11 848 833 169.9
B 7 220 69006 431.03 834 815 158.2
B 0 189 45251 280.88 834 815 158.2
B 12 111 17912 108.07 834 815 158.2
C 14 238 126806 684.12 798 806 184.2
C 3 233 6164 29.09 798 806 184.2
C 13 61 5654 26.32 798 806 184.2
D 7 238 650348 3295.49 810 788 197.1
D 1 52 451263 2285.45 810 788 197.1
D 5 222 425270 2153.57 810 788 197.1

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