ASTROSAT CZTI

Data Quality Report

Orbit 14864

Creation date: 2024-06-27T17:00:37.042099
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/AS1A04_218T01_9000002194_14864cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14864cztM0_level2_quad_clean.evt
Size (bytes)469,137,60089,481,600
Size447.4 MB 85.3 MB
Events in quadrant A3,376,576578,739
Events in quadrant B3,577,273574,402
Events in quadrant C3,419,024570,429
Events in quadrant D3,412,998552,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138233
B0145772
C0140012
D0139622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210811.304348%
B6210981.578100%
C6210791.272142%
D62101211.948470%

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 7516 6212 0 0 0.00% 0.00%
B 7516 6212 2 2 0.03% 0.03%
C 7516 6212 0 0 0.00% 0.00%
D 7516 6212 40 40 0.53% 0.64%

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 12 189 47706 274.05 862 849 171.0
A 3 1 8777 46.37 862 849 171.0
A 0 226 7678 39.94 862 849 171.0
B 0 189 75842 473.42 848 829 158.4
B 0 219 66480 414.34 848 829 158.4
B 4 48 33490 206.13 848 829 158.4
C 3 233 165957 876.0 831 836 188.5
C 6 96 13531 67.35 831 836 188.5
C 13 61 5945 27.1 831 836 188.5
D 7 254 157823 746.01 829 811 210.5
D 7 38 52693 246.51 829 811 210.5
D 2 234 24219 111.22 829 811 210.5

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