ASTROSAT CZTI

Data Quality Report

Orbit 41520

Creation date: 2024-06-27T22:30:01.854064
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_035T02_9000005676_41520cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41520cztM0_level2_quad_clean.evt
Size (bytes)315,944,64084,732,480
Size301.3 MB 80.8 MB
Events in quadrant A2,643,640583,552
Events in quadrant B2,731,332571,625
Events in quadrant C2,968,948544,811
Events in quadrant D2,960,922514,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108903
B0115702
C0118802
D0123752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500490.179856%
B50042274.536371%
C50042364.716227%
D50041873.737010%

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 7067 5005 5 5 0.07% 0.10%
B 7067 5005 183 183 2.59% 3.66%
C 7067 5005 233 233 3.30% 4.66%
D 7067 5005 168 168 2.38% 3.36%

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 488549 4261.37 555 543 114.5
A 13 254 8094 65.94 555 543 114.5
A 3 137 5981 47.49 555 543 114.5
B 0 186 442782 4296.0 543 528 102.9
B 0 190 43208 414.59 543 528 102.9
B 5 255 39427 377.86 543 528 102.9
C 0 10 606994 4924.31 533 537 123.2
C 15 214 201209 1629.42 533 537 123.2
C 14 254 65883 530.6 533 537 123.2
D 1 52 518096 3927.84 541 526 131.8
D 13 249 117336 886.47 541 526 131.8
D 1 47 100919 761.88 541 526 131.8

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