ASTROSAT CZTI

Data Quality Report

Orbit 08327

Creation date: 2024-06-27T15:31:10.682889
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/AS1G07_029T01_9000001158_08327cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08327cztM0_level2_quad_clean.evt
Size (bytes)510,511,68098,038,080
Size486.9 MB 93.5 MB
Events in quadrant A3,546,315617,249
Events in quadrant B4,191,039625,877
Events in quadrant C3,793,959617,404
Events in quadrant D3,430,674597,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155471
B0174210
C0164490
D0154840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73431822.478551%
B73433184.330655%
C73431932.628354%
D73431101.498025%

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 7343 7343 6 6 0.08% 0.08%
B 7343 7343 51 51 0.69% 0.69%
C 7343 7343 104 104 1.42% 1.42%
D 7343 7343 6 6 0.08% 0.08%

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 13 251 29980 156.45 896 874 186.0
A 15 223 27894 145.24 896 874 186.0
A 14 111 27456 142.88 896 874 186.0
B 4 81 601634 3480.7 892 870 172.6
B 0 214 59297 338.51 892 870 172.6
B 0 219 45345 257.68 892 870 172.6
C 9 54 406162 2002.48 868 874 202.4
C 13 61 6723 28.9 868 874 202.4
C 14 222 3146 11.23 868 874 202.4
D 2 152 72941 321.77 874 852 224.0
D 2 234 27490 118.9 874 852 224.0
D 2 14 26430 114.17 874 852 224.0

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