ASTROSAT CZTI

Data Quality Report

Orbit 17829

Creation date: 2024-06-27T17:41:24.526514
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_015T01_9000002650_17829cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17829cztM0_level2_quad_clean.evt
Size (bytes)469,163,52079,133,760
Size447.4 MB 75.5 MB
Events in quadrant A3,107,170492,575
Events in quadrant B3,352,995496,814
Events in quadrant C3,197,766482,986
Events in quadrant D4,114,952476,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135502
B0142722
C0137432
D0166512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415230.358535%
B6415510.795012%
C6415440.685892%
D64153525.487140%

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 7555 6416 0 0 0.00% 0.00%
B 7555 6416 7 7 0.09% 0.11%
C 7555 6416 0 0 0.00% 0.00%
D 7555 6416 248 248 3.28% 3.87%

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 16 10418 59.17 804 788 162.7
A 0 226 7086 38.7 804 788 162.7
A 12 194 6291 33.81 804 788 162.7
B 7 220 95895 626.03 805 787 151.9
B 4 216 31217 200.3 805 787 151.9
B 0 189 20003 126.49 805 787 151.9
C 14 238 119373 653.02 781 788 181.6
C 5 218 23062 122.66 781 788 181.6
C 1 16 9055 45.52 781 788 181.6
D 7 238 1042064 5618.71 765 747 185.3
D 10 70 118051 632.95 765 747 185.3
D 2 14 35656 188.36 765 747 185.3

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