ASTROSAT CZTI

Data Quality Report

Orbit 41255

Creation date: 2024-06-27T22:26:35.343853
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_052T04_9000005638_41255cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41255cztM0_level2_quad_clean.evt
Size (bytes)356,909,76090,478,080
Size340.4 MB 86.3 MB
Events in quadrant A3,267,934611,175
Events in quadrant B3,133,350604,700
Events in quadrant C2,971,443592,628
Events in quadrant D3,422,560556,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129513
B0131032
C0120552
D0137802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5347390.729381%
B53472705.049561%
C53471462.730503%
D5347691.290443%

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 8961 5349 38 38 0.42% 0.71%
B 8961 5348 199 199 2.22% 3.72%
C 8961 5349 136 136 1.52% 2.54%
D 8961 5349 56 56 0.62% 1.05%

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 520300 4330.23 592 580 120.0
A 6 10 410453 3415.0 592 580 120.0
A 12 189 30991 253.38 592 580 120.0
B 0 186 808257 7166.52 583 567 112.7
B 0 245 14494 123.57 583 567 112.7
B 12 111 14031 119.46 583 567 112.7
C 0 10 363896 2677.46 582 587 135.7
C 15 214 228691 1681.05 582 587 135.7
C 9 54 74435 544.23 582 587 135.7
D 2 120 596613 4156.96 587 572 143.4
D 5 222 231715 1612.06 587 572 143.4
D 1 52 125801 873.38 587 572 143.4

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