ASTROSAT CZTI

Data Quality Report

Orbit 40939

Creation date: 2024-06-27T22:22:28.357600
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_9000005582_40939cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40939cztM0_level2_quad_clean.evt
Size (bytes)284,817,60087,840,000
Size271.6 MB 83.8 MB
Events in quadrant A2,677,697604,307
Events in quadrant B2,295,656614,454
Events in quadrant C2,656,953564,326
Events in quadrant D2,529,733533,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108823
B0100762
C0108392
D0107782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4910150.305499%
B4910180.366599%
C4910801.629328%
D4910270.549898%

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 7033 4911 6 6 0.09% 0.12%
B 7033 4911 6 6 0.09% 0.12%
C 7033 4911 71 71 1.01% 1.45%
D 7033 4911 22 22 0.31% 0.45%

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 486947 4272.66 560 549 113.8
A 13 248 12984 109.23 560 549 113.8
A 13 6 9967 82.73 560 549 113.8
B 5 255 37032 342.68 558 543 106.5
B 0 186 34668 320.48 558 543 106.5
B 0 229 23067 211.53 558 543 106.5
C 0 10 231593 1862.18 536 541 124.1
C 15 214 227653 1830.42 536 541 124.1
C 14 254 59924 478.6 536 541 124.1
D 2 249 118183 911.51 539 525 129.1
D 13 249 95701 737.34 539 525 129.1
D 1 47 70070 538.77 539 525 129.1

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