ASTROSAT CZTI

Data Quality Report

Orbit 22474

Creation date: 2024-06-27T18:41:41.423580
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/AS1A07_144T02_9000003340_22474cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22474cztM0_level2_quad_clean.evt
Size (bytes)451,494,72073,134,720
Size430.6 MB 69.7 MB
Events in quadrant A3,032,522448,791
Events in quadrant B3,114,893459,696
Events in quadrant C3,226,600440,813
Events in quadrant D3,871,059425,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129101
B0130781
C0134591
D0156541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6304320.507614%
B6305410.650278%
C6304861.364213%
D63043185.044416%

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 7269 6304 0 0 0.00% 0.00%
B 7270 6305 1 1 0.01% 0.02%
C 7269 6304 17 17 0.23% 0.27%
D 7269 6304 276 276 3.80% 4.38%

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 8987 51.86 783 765 158.5
A 2 79 8478 48.65 783 765 158.5
A 0 226 6793 38.02 783 765 158.5
B 0 190 37262 242.12 777 757 150.8
B 0 245 24097 154.8 777 757 150.8
B 12 111 18260 116.09 777 757 150.8
C 10 22 172189 966.15 752 758 177.4
C 14 238 117840 659.85 752 758 177.4
C 13 61 5260 25.37 752 758 177.4
D 2 136 969439 5292.54 750 729 183.0
D 1 52 39681 212.81 750 729 183.0
D 2 234 25704 136.45 750 729 183.0

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