ASTROSAT CZTI

Data Quality Report

Orbit 20728

Creation date: 2024-06-27T18:18:50.011120
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_165T07_9000003062_20728cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20728cztM0_level2_quad_clean.evt
Size (bytes)512,441,28099,679,680
Size488.7 MB 95.1 MB
Events in quadrant A3,039,304690,316
Events in quadrant B3,292,935671,601
Events in quadrant C3,044,716640,556
Events in quadrant D5,744,664606,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125692
B0134752
C0126442
D0211882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5863801.364489%
B58641101.875853%
C5864991.688267%
D586458810.027285%

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 7203 5865 2 2 0.03% 0.03%
B 7204 5866 19 19 0.26% 0.32%
C 7204 5866 0 0 0.00% 0.00%
D 7204 5866 484 484 6.72% 8.25%

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 6 240 20129 124.08 783 771 156.0
A 0 226 7001 39.93 783 771 156.0
A 3 137 5861 32.63 783 771 156.0
B 7 220 187797 1308.45 760 744 143.0
B 0 190 32021 218.78 760 744 143.0
B 3 64 25484 173.06 760 744 143.0
C 14 238 115994 690.91 725 732 166.8
C 8 208 63573 376.68 725 732 166.8
C 3 233 34800 204.21 725 732 166.8
D 1 52 1491650 8537.62 732 713 174.6
D 1 20 1081662 6189.89 732 713 174.6
D 7 38 237098 1353.62 732 713 174.6

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