ASTROSAT CZTI

Data Quality Report

Orbit 22450

Creation date: 2024-06-27T18:41:05.901499
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_056T01_9000003330_22450cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22450cztM0_level2_quad_clean.evt
Size (bytes)481,435,200132,966,720
Size459.1 MB 126.8 MB
Events in quadrant A3,047,799905,102
Events in quadrant B4,174,810921,999
Events in quadrant C3,294,551902,766
Events in quadrant D3,647,283869,695

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130472
B0166752
C0137902
D0149302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6129300.489476%
B61292023.295807%
C61291041.696851%
D61291221.990537%

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 7504 6130 0 0 0.00% 0.00%
B 7504 6130 109 109 1.45% 1.78%
C 7504 6129 7 7 0.09% 0.11%
D 7504 6130 74 74 0.99% 1.21%

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 3 1 15593 96.01 785 771 154.4
A 13 254 9791 58.43 785 771 154.4
A 15 174 6731 38.61 785 771 154.4
B 10 245 1047069 7255.45 787 770 144.2
B 0 197 17819 118.22 787 770 144.2
B 12 111 16460 108.8 787 770 144.2
C 14 238 121856 677.3 774 781 178.8
C 0 10 51812 285.47 774 781 178.8
C 3 9 40404 221.65 774 781 178.8
D 1 52 420770 2266.13 774 753 185.3
D 13 249 152196 817.09 774 753 185.3
D 2 120 76632 409.39 774 753 185.3

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