ASTROSAT CZTI

Data Quality Report

Orbit 21106

Creation date: 2024-06-27T18:23:38.257027
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_163T01_9000003118_21106cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21106cztM0_level2_quad_clean.evt
Size (bytes)503,844,48079,346,880
Size480.5 MB 75.7 MB
Events in quadrant A3,263,352497,726
Events in quadrant B3,605,159502,743
Events in quadrant C3,255,714479,488
Events in quadrant D4,686,882462,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137312
B0149052
C0136382
D0183262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6599510.772844%
B65991251.894226%
C6599711.075921%
D65982674.046681%

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 7609 6600 3 3 0.04% 0.05%
B 7609 6600 20 20 0.26% 0.30%
C 7609 6600 1 1 0.01% 0.02%
D 7608 6599 231 231 3.04% 3.50%

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 13 34 83408 494.59 825 810 167.0
A 13 254 10534 58.23 825 810 167.0
A 0 226 7049 37.36 825 810 167.0
B 0 182 185175 1177.18 827 807 156.6
B 0 228 71454 451.08 827 807 156.6
B 7 220 33624 209.53 827 807 156.6
C 14 238 124623 661.53 793 799 187.2
C 7 221 28772 149.45 793 799 187.2
C 9 54 13941 70.21 793 799 187.2
D 1 20 651246 3425.03 785 765 189.9
D 10 199 549139 2887.4 785 765 189.9
D 13 153 188046 986.11 785 765 189.9

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