ASTROSAT CZTI

Data Quality Report

Orbit 35668

Creation date: 2022-05-04T02:41:02.307125
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/AS1A09_029T02_9000005106_35668cztM0_level2.evt modeM0/AS1A09_029T02_9000005106_35668cztM0_level2_quad_clean.evt
Size (bytes)192,435,84027,408,960
Size183.5 MB 26.1 MB
Events in quadrant A1,134,277172,861
Events in quadrant B1,311,940176,697
Events in quadrant C1,579,689164,678
Events in quadrant D1,654,049159,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045672
B051761
C060291
D062761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214740.186306%
B2147552.561714%
C21471235.728924%
D21471376.380997%

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 4271 2148 1 1 0.02% 0.05%
B 4271 2148 35 35 0.82% 1.63%
C 4271 2148 104 104 2.44% 4.84%
D 4271 2148 100 100 2.34% 4.66%

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 65230 1171.19 267 262 55.5
A 15 169 23457 418.14 267 262 55.5
A 13 6 7775 135.44 267 262 55.5
B 5 255 134894 2574.82 266 260 52.3
B 5 172 87336 1665.29 266 260 52.3
B 5 200 28902 547.77 266 260 52.3
C 0 10 173572 2828.7 256 258 61.3
C 1 23 143209 2333.14 256 258 61.3
C 14 128 139777 2277.12 256 258 61.3
D 13 249 458390 7155.7 257 249 64.0
D 7 80 92117 1434.88 257 249 64.0
D 10 118 28707 444.49 257 249 64.0

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