ASTROSAT CZTI

Data Quality Report

Orbit 39375

Creation date: 2024-06-27T22:03:49.342112
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_018T01_9000005470_39375cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39375cztM0_level2_quad_clean.evt
Size (bytes)333,740,16069,615,360
Size318.3 MB 66.4 MB
Events in quadrant A2,090,733496,805
Events in quadrant B3,044,526491,548
Events in quadrant C2,006,380476,034
Events in quadrant D4,898,205358,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0301
C0311
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0895
B0895
C0904
D0895

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09197588
B012332573
C08857404
D0186751362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A405470.172669%
B40392325.743996%
C4067100.245881%
D396579520.050441%

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 6297 4094 4 4 0.06% 0.10%
B 6329 4102 166 166 2.62% 4.05%
C 6321 4107 12 12 0.19% 0.29%
D 4117 4078 657 657 15.96% 16.11%

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 282589 3023.65 460 452 93.3
A 13 248 9710 99.22 460 452 93.3
A 15 174 7849 79.27 460 452 93.3
B 5 172 643300 7506.07 445 433 85.6
B 5 200 594154 6932.25 445 433 85.6
B 4 170 38854 448.6 445 433 85.6
C 15 214 167892 1644.56 440 443 101.8
C 14 254 95444 933.03 440 443 101.8
C 9 187 13675 129.95 440 443 101.8
D 12 235 2998626 31137.33 394 382 96.3
D 13 249 216385 2243.23 394 382 96.3
D 2 249 145012 1502.01 394 382 96.3

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