ASTROSAT CZTI

Data Quality Report

Orbit 24687

Creation date: 2024-06-27T19:08:46.268979
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_191T01_9000003618_24687cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24687cztM0_level2_quad_clean.evt
Size (bytes)998,461,440240,903,360
Size952.2 MB 229.7 MB
Events in quadrant A5,968,2951,650,945
Events in quadrant B6,086,2401,663,723
Events in quadrant C6,469,7991,565,450
Events in quadrant D10,835,6281,518,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264153
B0266173
C0275843
D0411343

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13007850.653494%
B130071180.907204%
C130072031.560698%
D130085364.120541%

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 14532 13007 1 1 0.01% 0.01%
B 14532 13007 7 7 0.05% 0.05%
C 14532 13007 38 38 0.26% 0.29%
D 14533 13008 369 369 2.54% 2.84%

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 13 254 19162 57.16 1542 1506 308.9
A 3 137 14507 42.09 1542 1506 308.9
A 0 226 13060 37.4 1542 1506 308.9
B 12 111 36060 119.24 1530 1491 289.9
B 4 80 34576 114.12 1530 1491 289.9
B 11 111 32267 106.16 1530 1491 289.9
C 6 96 281165 824.83 1464 1471 339.1
C 14 238 236437 692.92 1464 1471 339.1
C 2 16 101624 295.36 1464 1471 339.1
D 1 52 4209421 11814.91 1473 1428 356.2
D 7 238 740187 2074.24 1473 1428 356.2
D 8 195 185176 515.91 1473 1428 356.2

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