ASTROSAT CZTI

Data Quality Report

Orbit 50365

Creation date: 2025-01-20T09:35:45.239929
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_50365cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50365cztM0_level2_quad_clean.evt
Size (bytes)732,936,96082,788,480
Size699.0 MB 79.0 MB
Events in quadrant A5,044,888572,043
Events in quadrant B4,560,193611,408
Events in quadrant C8,348,107445,598
Events in quadrant D8,678,560427,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192851
B0181362
C0292581
D0302201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64505698.821705%
B64506239.658915%
C6450178327.643411%
D6450165825.705426%

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 7105 6451 316 316 4.45% 4.90%
B 7105 6451 365 365 5.14% 5.66%
C 7105 6451 1347 1347 18.96% 20.88%
D 7105 6451 1622 1622 22.83% 25.14%

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 8 248 935574 5501.65 685 666 169.9
A 7 206 190150 1115.06 685 666 169.9
A 7 221 156181 915.16 685 666 169.9
B 4 170 853756 5905.77 674 650 144.5
B 5 172 230566 1591.63 674 650 144.5
B 7 252 167994 1158.47 674 650 144.5
C 0 208 2943772 17634.11 603 599 166.9
C 15 230 1034821 6196.57 603 599 166.9
C 15 234 274848 1643.17 603 599 166.9
D 7 61 3124380 18175.94 613 592 171.9
D 3 12 800065 4651.78 613 592 171.9
D 6 42 374666 2176.57 613 592 171.9

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