ASTROSAT CZTI

Data Quality Report

Orbit 41939

Creation date: 2024-06-27T22:34:44.296674
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_099T03_9000005720_41939cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41939cztM0_level2_quad_clean.evt
Size (bytes)394,706,88083,237,760
Size376.4 MB 79.4 MB
Events in quadrant A3,385,241590,633
Events in quadrant B2,897,389599,426
Events in quadrant C3,364,515556,902
Events in quadrant D4,586,831434,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131992
B0117132
C0130272
D0169243

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48741172.400492%
B48741543.159622%
C47982625.460609%
D481297220.199501%

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 6997 4875 91 91 1.30% 1.87%
B 6997 4875 132 132 1.89% 2.71%
C 6997 4799 261 261 3.73% 5.44%
D 6997 4814 951 951 13.59% 19.75%

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 14 24 706842 6146.6 562 551 114.9
A 10 83 486116 4225.7 562 551 114.9
A 13 6 10944 90.45 562 551 114.9
B 0 229 507230 4838.48 547 533 104.7
B 5 255 185254 1763.91 547 533 104.7
B 0 190 26436 247.35 547 533 104.7
C 14 254 751505 6115.35 530 535 122.8
C 0 10 340593 2769.18 530 535 122.8
C 15 214 195773 1589.88 530 535 122.8
D 12 79 1852103 14936.27 512 498 124.0
D 13 249 531859 4286.31 512 498 124.0
D 1 52 79781 639.55 512 498 124.0

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