ASTROSAT CZTI

Data Quality Report

Orbit 04956

Creation date: 2024-06-27T14:49:20.087207
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/AS1G05_157T01_9000000626_04956cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04956cztM0_level2_quad_clean.evt
Size (bytes)595,555,20094,066,560
Size568.0 MB 89.7 MB
Events in quadrant A3,841,904585,409
Events in quadrant B4,178,176578,776
Events in quadrant C3,534,951586,327
Events in quadrant D5,934,402537,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01662

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01724611
B01804020
C01653716
D02346949

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80661051.301760%
B80621842.282312%
C8063440.545703%
D80596317.829756%

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 8670 8070 5 5 0.06% 0.06%
B 8670 8071 52 52 0.60% 0.64%
C 8670 8072 0 0 0.00% 0.00%
D 8670 8067 502 502 5.79% 6.22%

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 8 15 131832 686.95 924 903 190.6
A 0 31 91634 476.04 924 903 190.6
A 15 174 30327 154.38 924 903 190.6
B 10 16 264126 1454.36 932 909 181.0
B 15 204 154502 848.65 932 909 181.0
B 5 6 74318 405.61 932 909 181.0
C 8 128 15597 70.21 895 898 209.3
C 9 54 8753 37.52 895 898 209.3
C 8 112 8232 35.03 895 898 209.3
D 2 33 1132483 5270.05 867 838 214.7
D 13 235 526938 2450.04 867 838 214.7
D 2 136 325909 1513.85 867 838 214.7

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