ASTROSAT CZTI

Data Quality Report

Orbit 20327

Creation date: 2024-06-27T18:13:56.500357
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_174T01_9000003008_20327cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20327cztM0_level2_quad_clean.evt
Size (bytes)535,916,16091,252,800
Size511.1 MB 87.0 MB
Events in quadrant A3,661,924563,521
Events in quadrant B4,628,587571,000
Events in quadrant C3,619,333555,799
Events in quadrant D3,810,777550,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157771
B0184781
C0155011
D0163692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75021982.639296%
B75035036.703985%
C75031912.545648%
D75021852.466009%

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 7697 7503 5 5 0.06% 0.07%
B 7698 7504 199 199 2.59% 2.65%
C 7698 7504 0 0 0.00% 0.00%
D 7697 7503 38 38 0.49% 0.51%

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 4 2 54840 288.99 918 895 186.7
A 5 16 32369 168.61 918 895 186.7
A 14 238 25769 133.25 918 895 186.7
B 4 142 702120 4006.01 898 873 175.0
B 7 220 210365 1196.76 898 873 175.0
B 0 197 99654 564.31 898 873 175.0
C 14 238 136383 649.1 883 888 208.7
C 3 9 21137 97.0 883 888 208.7
C 3 233 14819 66.74 883 888 208.7
D 1 52 219788 986.63 906 880 221.9
D 13 138 68531 304.91 906 880 221.9
D 9 1 56288 249.73 906 880 221.9

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