ASTROSAT CZTI

Data Quality Report

Orbit 29353

Creation date: 2024-06-27T20:03:07.212111
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_279T01_9000004218_29353cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29353cztM0_level2_quad_clean.evt
Size (bytes)592,917,12082,019,520
Size565.4 MB 78.2 MB
Events in quadrant A2,772,972542,774
Events in quadrant B2,927,935553,932
Events in quadrant C6,503,081519,501
Events in quadrant D5,383,720485,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115151
B0120241
C0232181
D0195911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5450120.220183%
B5451420.770501%
C545187215.997065%
D545175213.795634%

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 6675 5451 1 1 0.01% 0.02%
B 6676 5452 20 20 0.30% 0.37%
C 6676 5452 493 493 7.38% 9.04%
D 6676 5452 557 557 8.34% 10.22%

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 1 113 54807 384.08 704 689 140.9
A 13 254 10996 73.15 704 689 140.9
A 3 137 6112 38.49 704 689 140.9
B 10 245 144243 1108.0 697 684 129.6
B 0 229 24110 180.8 697 684 129.6
B 12 111 14749 108.55 697 684 129.6
C 3 233 3178012 20644.19 667 674 153.9
C 10 9 559661 3631.92 667 674 153.9
C 14 238 108645 701.52 667 674 153.9
D 1 52 1806432 11561.64 659 642 156.2
D 13 104 591889 3785.48 659 642 156.2
D 13 153 165113 1053.03 659 642 156.2

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