ASTROSAT CZTI

Data Quality Report

Orbit 54007

Creation date: 2025-09-22T21:28:00.609661
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/AS1A14_041T01_9000006510_54007cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54007cztM0_level2_quad_clean.evt
Size (bytes)694,344,96084,735,360
Size662.2 MB 80.8 MB
Events in quadrant A5,142,977596,662
Events in quadrant B4,182,623681,760
Events in quadrant C4,170,308607,872
Events in quadrant D11,717,784239,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198282
B0169742
C0166253
D03921323

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62985929.399809%
B62982664.223563%
C62971752.779101%
D6295389661.890389%

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 7523 6299 640 640 8.51% 10.16%
B 7523 6299 185 185 2.46% 2.94%
C 7523 6299 157 157 2.09% 2.49%
D 7522 6297 3495 3495 46.46% 55.50%

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 12 115 1299762 8020.07 653 638 162.0
A 15 174 1097084 6768.85 653 638 162.0
A 0 8 54538 332.75 653 638 162.0
B 0 213 370466 2623.08 672 648 141.0
B 0 155 330365 2338.65 672 648 141.0
B 2 249 166153 1173.91 672 648 141.0
C 12 250 742834 4022.54 672 665 184.5
C 14 80 412366 2231.41 672 665 184.5
C 9 53 128866 694.84 672 665 184.5
D 8 176 9022625 75137.53 415 396 120.1
D 14 52 178042 1479.44 415 396 120.1
D 6 239 160450 1332.94 415 396 120.1

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