ASTROSAT CZTI

Data Quality Report

Orbit 20210414_A10_083T01_9000004306_level2

Creation date: 2025-12-23T23:23:27.720005
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/AS1A10_083T01_9000004306cztM0_level2.fits modeM0/AS1A10_083T01_9000004306cztM0_level2_quad_clean.evt
Size (bytes)152,758,080171,167,040
Size145.7 MB 163.2 MB
Events in quadrant A940,9721,081,144
Events in quadrant B874,6541,057,161
Events in quadrant C906,1041,005,323
Events in quadrant D807,906942,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328100
B0481620
C0330140
D0342120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159001811.138365%
B159003712.333333%
C159002191.377358%
D159001060.666667%

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 16930 15900 0 0 0.00% 0.00%
B 16930 15900 0 0 0.00% 0.00%
C 16930 15900 0 0 0.00% 0.00%
D 16930 15899 0 0 0.00% 0.00%

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 0 29 918 11.04 245 231 62.2
A 7 110 744 8.25 245 231 62.2
A 0 30 721 7.88 245 231 62.2
B 2 9 753 11.15 231 220 47.8
B 3 17 617 8.31 231 220 47.8
B 2 8 602 7.99 231 220 47.8
C 1 80 715 7.9 239 223 62.3
C 1 81 710 7.82 239 223 62.3
C 12 241 649 6.84 239 223 62.3
D 15 46 608 6.33 230 209 62.9
D 10 189 572 5.76 230 209 62.9
D 1 31 571 5.74 230 209 62.9

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