ASTROSAT CZTI

Data Quality Report

Orbit 39502

Creation date: 2024-06-27T22:05:24.888756
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_018T01_9000005488_39502cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39502cztM0_level2_quad_clean.evt
Size (bytes)297,898,56094,063,680
Size284.1 MB 89.7 MB
Events in quadrant A2,966,001630,987
Events in quadrant B2,404,399650,785
Events in quadrant C2,594,911621,020
Events in quadrant D2,642,443568,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124463
B0109082
C0110842
D0117292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5378300.557828%
B537850.092971%
C537890.167348%
D5378460.855337%

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 7201 5379 16 16 0.22% 0.30%
B 7201 5379 0 0 0.00% 0.00%
C 7201 5379 3 3 0.04% 0.06%
D 7201 5379 31 31 0.43% 0.58%

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 447664 3674.74 599 588 121.7
A 6 10 73264 597.36 599 588 121.7
A 15 174 70264 572.7 599 588 121.7
B 0 213 19823 167.24 601 584 115.0
B 0 230 14576 121.63 601 584 115.0
B 12 111 14273 119.0 601 584 115.0
C 15 214 225689 1633.98 596 601 137.8
C 3 233 19168 134.78 596 601 137.8
C 0 10 15738 109.88 596 601 137.8
D 13 249 153802 1065.31 591 576 143.8
D 12 227 56422 388.27 591 576 143.8
D 2 249 50581 347.66 591 576 143.8

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