ASTROSAT CZTI

Data Quality Report

Orbit 43694

Creation date: 2024-06-27T22:54:38.059350
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/AS1A13_008T01_9000005898_43694cztM0_level2.fits modeM0/AS1A13_008T01_9000005898_43694cztM0_level2_quad_clean.evt
Size (bytes)859,780,800114,082,560
Size820.0 MB 108.8 MB
Events in quadrant A12,611,798736,859
Events in quadrant B4,215,962815,998
Events in quadrant C7,354,986733,327
Events in quadrant D7,092,530668,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423825
B0172641
C0266901
D0259341

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7133285940.081312%
B71342793.910849%
C7134117016.400336%
D7134105314.760303%

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 7783 7134 2308 2308 29.65% 32.35%
B 7784 7135 98 98 1.26% 1.37%
C 7784 7135 793 793 10.19% 11.11%
D 7784 7135 889 889 11.42% 12.46%

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 15 222 4492387 28240.98 761 745 159.0
A 14 63 3939809 24766.67 761 745 159.0
A 10 83 851162 5346.95 761 745 159.0
B 5 235 500611 3008.47 828 801 166.1
B 4 206 144482 864.85 828 801 166.1
B 5 172 100282 598.8 828 801 166.1
C 15 157 2714818 15131.58 756 762 179.4
C 3 233 983149 5477.07 756 762 179.4
C 15 173 280080 1557.27 756 762 179.4
D 7 80 1789798 8990.55 770 747 199.0
D 2 249 443104 2222.98 770 747 199.0
D 13 171 340518 1707.46 770 747 199.0

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