ASTROSAT CZTI

Data Quality Report

Orbit 40979

Creation date: 2024-06-27T22:22:56.163981
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_066T01_9000005584_40979cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40979cztM0_level2_quad_clean.evt
Size (bytes)359,193,60092,298,240
Size342.6 MB 88.0 MB
Events in quadrant A2,987,485630,829
Events in quadrant B2,559,110641,681
Events in quadrant C2,833,941605,312
Events in quadrant D4,479,829525,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121163
B0114222
C0118432
D0171322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559590.160858%
B5595140.250223%
C5595631.126005%
D559556810.151921%

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 7388 5596 4 4 0.05% 0.07%
B 7388 5596 12 12 0.16% 0.21%
C 7388 5596 58 58 0.79% 1.04%
D 7388 5596 551 551 7.46% 9.85%

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 512620 3937.06 635 620 130.0
A 2 79 14071 103.43 635 620 130.0
A 13 254 8385 59.71 635 620 130.0
B 5 255 78819 636.11 626 610 122.9
B 0 229 16256 127.26 626 610 122.9
B 12 111 15349 119.88 626 610 122.9
C 15 214 239968 1674.89 612 615 142.9
C 0 10 176726 1232.35 612 615 142.9
C 12 249 31539 216.39 612 615 142.9
D 1 47 1059625 7348.4 592 575 144.1
D 13 249 353204 2446.78 592 575 144.1
D 12 233 335250 2322.2 592 575 144.1

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