ASTROSAT CZTI

Data Quality Report

Orbit 41955

Creation date: 2024-06-27T22:34:58.153435
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_101T01_9000005722_41955cztM0_level2.fits modeM0/AS1A12_101T01_9000005722_41955cztM0_level2_quad_clean.evt
Size (bytes)319,976,64094,216,320
Size305.2 MB 89.9 MB
Events in quadrant A2,987,944634,766
Events in quadrant B2,884,570648,480
Events in quadrant C2,611,438616,975
Events in quadrant D2,926,673563,602

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120183
B0123012
C0111812
D0125212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5567100.179630%
B5567901.616670%
C556740.071852%
D5567591.059817%

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 9723 5569 4 4 0.04% 0.07%
B 9723 5569 54 54 0.56% 0.97%
C 9723 5569 0 0 0.00% 0.00%
D 9723 5569 53 53 0.55% 0.95%

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 555449 4319.62 623 611 128.4
A 2 79 18323 137.89 623 611 128.4
A 13 6 8253 59.5 623 611 128.4
B 0 229 274285 2320.37 615 598 117.9
B 5 255 142260 1201.04 615 598 117.9
B 0 190 51123 428.36 615 598 117.9
C 15 214 245162 1739.95 605 608 140.6
C 3 233 4786 29.73 605 608 140.6
C 13 61 4009 24.2 605 608 140.6
D 13 249 159637 1083.39 604 588 146.8
D 12 6 73681 497.89 604 588 146.8
D 2 249 67772 457.63 604 588 146.8

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