ASTROSAT CZTI

Data Quality Report

Orbit 50219

Creation date: 2025-01-10T21:00:19.502367
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/AS1C09_003T01_9000006442_50219cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50219cztM0_level2_quad_clean.evt
Size (bytes)959,031,36068,785,920
Size914.6 MB 65.6 MB
Events in quadrant A6,903,891469,000
Events in quadrant B5,276,996595,201
Events in quadrant C11,925,013211,685
Events in quadrant D10,915,114372,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246594
B0199701
C0396811
D0367661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6213149324.030259%
B621466610.717734%
C6214405965.320245%
D6214230337.061474%

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 7197 6212 1291 1291 17.94% 20.78%
B 7199 6214 421 421 5.85% 6.78%
C 7199 6214 3575 3575 49.66% 57.53%
D 7199 6214 2300 2300 31.95% 37.01%

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 0 98 2394396 16235.2 589 576 147.4
A 4 249 1030264 6983.48 589 576 147.4
A 4 156 345067 2336.38 589 576 147.4
B 4 206 2093646 15498.26 634 613 135.0
B 5 185 173419 1279.58 634 613 135.0
B 8 128 61595 451.55 634 613 135.0
C 4 111 5785497 54754.9 378 375 105.7
C 15 197 1090616 10318.89 378 375 105.7
C 15 199 1041357 9852.66 378 375 105.7
D 15 108 2081475 13155.12 558 539 158.2
D 15 94 1025241 6477.89 558 539 158.2
D 11 245 933309 5896.72 558 539 158.2

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