ASTROSAT CZTI

Data Quality Report

Orbit 51196

Creation date: 2025-03-17T14:44:29.572077
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/AS1C07_001T01_9000006454_51196cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51196cztM0_level2_quad_clean.evt
Size (bytes)786,833,28091,713,600
Size750.4 MB 87.5 MB
Events in quadrant A5,190,876642,265
Events in quadrant B4,860,121702,651
Events in quadrant C13,326,571356,256
Events in quadrant D5,193,503575,956

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202930
B0193420
C0445031
D0204550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71692984.156786%
B71692803.905705%
C7169363450.690473%
D71693434.784489%

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 7169 7169 177 177 2.47% 2.47%
B 7169 7169 153 153 2.13% 2.13%
C 7169 7169 3178 3178 44.33% 44.33%
D 7169 7169 286 286 3.99% 3.99%

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 12 3 695124 3730.06 745 725 186.2
A 13 248 262456 1405.92 745 725 186.2
A 3 114 185176 990.8 745 725 186.2
B 4 170 360139 2237.83 742 717 160.6
B 5 172 324093 2013.4 742 717 160.6
B 8 234 271889 1688.37 742 717 160.6
C 4 12 5863199 36169.94 590 587 162.1
C 15 230 1289994 7955.12 590 587 162.1
C 10 252 862785 5319.41 590 587 162.1
D 10 172 359355 1759.41 716 690 203.9
D 8 176 299888 1467.7 716 690 203.9
D 7 60 220732 1079.4 716 690 203.9

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