ASTROSAT CZTI

Data Quality Report

Orbit 40387

Creation date: 2024-06-27T22:15:30.933267
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_056T02_9000005538_40387cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40387cztM0_level2_quad_clean.evt
Size (bytes)354,602,88099,852,480
Size338.2 MB 95.2 MB
Events in quadrant A3,274,912698,494
Events in quadrant B2,770,671717,838
Events in quadrant C2,739,606681,467
Events in quadrant D3,923,143550,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130093
B0114892
C0111982
D0150772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5361701.305727%
B5361130.242492%
C5361110.205186%
D536181015.109121%

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 7394 5362 49 49 0.66% 0.91%
B 7394 5362 4 4 0.05% 0.07%
C 7394 5362 6 6 0.08% 0.11%
D 7394 5361 243 243 3.29% 4.53%

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 479022 3666.49 651 642 130.5
A 13 248 228016 1742.68 651 642 130.5
A 7 191 33032 248.25 651 642 130.5
B 4 170 108362 888.61 643 626 121.2
B 0 245 66967 547.18 643 626 121.2
B 0 230 62488 510.24 643 626 121.2
C 15 214 234757 1628.7 626 631 143.7
C 0 10 36213 247.52 626 631 143.7
C 12 249 23500 159.09 626 631 143.7
D 2 250 876535 6103.22 587 571 143.5
D 13 249 245720 1708.06 587 571 143.5
D 12 191 185305 1287.12 587 571 143.5

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