ASTROSAT CZTI

Data Quality Report

Orbit 22499

Creation date: 2024-06-27T18:41:59.269362
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_22499cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22499cztM0_level2_quad_clean.evt
Size (bytes)379,929,60068,987,520
Size362.3 MB 65.8 MB
Events in quadrant A3,137,256544,789
Events in quadrant B3,412,842552,648
Events in quadrant C964,19087
Events in quadrant D3,529,009522,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138982
B0146962
C066932
D0150222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691971.449709%
B66911592.376326%
C66916691100.000000%
D6692761.135684%

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 6996 6691 0 0 0.00% 0.00%
B 6996 6692 31 31 0.44% 0.46%
C 6995 6690 0 0 0.00% 0.00%
D 6997 6693 40 40 0.57% 0.60%

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 6 240 14161 81.84 803 785 163.5
A 3 1 13011 74.8 803 785 163.5
A 13 254 10058 56.73 803 785 163.5
B 15 33 158891 1015.23 798 777 155.7
B 5 172 114985 733.32 798 777 155.7
B 12 111 19357 119.3 798 777 155.7
C 7 119 952032 689066.46 2 2 1.4
C 7 226 1979 1430.93 2 2 1.4
C 14 238 1060 765.77 2 2 1.4
D 1 52 541801 2809.79 780 755 192.6
D 2 234 28975 146.55 780 755 192.6
D 13 172 20585 102.98 780 755 192.6

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