ASTROSAT CZTI

Data Quality Report

Orbit 54264

Creation date: 2025-10-10T11:04:17.666920
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_004T08_9000006514_54264cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54264cztM0_level2_quad_clean.evt
Size (bytes)760,576,32081,250,560
Size725.3 MB 77.5 MB
Events in quadrant A4,818,986565,126
Events in quadrant B5,468,059628,830
Events in quadrant C7,010,675497,462
Events in quadrant D10,335,171300,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193141
B0209242
C0255421
D0353361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67176649.885365%
B67165548.248958%
C6716122018.165575%
D6716334349.776653%

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 7537 6717 567 567 7.52% 8.44%
B 7536 6717 336 336 4.46% 5.00%
C 7536 6717 1169 1169 15.51% 17.40%
D 7535 6716 2840 2840 37.69% 42.29%

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 7 29 1800694 11025.26 660 645 163.3
A 0 8 198756 1213.43 660 645 163.3
A 15 174 97017 590.28 660 645 163.3
B 5 185 1567110 10843.9 677 653 144.5
B 0 213 339692 2347.02 677 653 144.5
B 5 236 294795 2036.22 677 653 144.5
C 1 29 3011700 17611.61 618 610 171.0
C 1 241 603547 3526.53 618 610 171.0
C 15 215 419156 2448.04 618 610 171.0
D 8 176 8212962 64417.13 443 422 127.5
D 10 181 163415 1278.48 443 422 127.5
D 3 144 87537 683.31 443 422 127.5

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