ASTROSAT CZTI

Data Quality Report

Orbit 39234

Creation date: 2024-06-27T22:02:05.668693
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/AS1A12_054T04_9000005446_39234cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39234cztM0_level2_quad_clean.evt
Size (bytes)150,600,96020,229,120
Size143.6 MB 19.3 MB
Events in quadrant A827,242164,175
Events in quadrant B733,988160,256
Events in quadrant C759,441148,344
Events in quadrant D3,141,78435,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033311
B030921
C030981
D0102801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140450.356125%
B1404261.851852%
C1404100.712251%
D1404116983.262108%

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 1404 1404 3 3 0.21% 0.21%
B 1404 1404 18 18 1.28% 1.28%
C 1404 1404 8 8 0.57% 0.57%
D 1404 1404 844 844 60.11% 60.11%

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 10 83 169788 4869.43 161 158 34.8
A 13 248 19326 550.24 161 158 34.8
A 10 255 11112 314.45 161 158 34.8
B 5 255 59042 1819.85 157 153 32.4
B 5 172 37109 1142.06 157 153 32.4
B 0 197 5746 172.84 157 153 32.4
C 15 214 62368 1636.33 155 156 38.0
C 14 254 60491 1586.96 155 156 38.0
C 3 233 16809 438.02 155 156 38.0
D 12 235 2537884 91316.85 104 100 27.8
D 12 227 69862 2510.24 104 100 27.8
D 1 47 55831 2005.36 104 100 27.8

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