ASTROSAT CZTI

Data Quality Report

Orbit 54414

Creation date: 2025-10-19T11:12:32.102098
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_126T19_9000006518_54414cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54414cztM0_level2_quad_clean.evt
Size (bytes)635,892,48093,225,600
Size606.4 MB 88.9 MB
Events in quadrant A3,216,571673,441
Events in quadrant B3,387,460722,900
Events in quadrant C5,137,767604,595
Events in quadrant D11,261,914341,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148872
B0152132
C0202662
D0381902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6884420.610110%
B6885981.423384%
C68855918.583878%
D6885321446.681191%

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 9199 6885 20 20 0.22% 0.29%
B 9200 6887 39 39 0.42% 0.57%
C 9200 6886 587 587 6.38% 8.52%
D 9200 6886 3115 3115 33.86% 45.24%

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 7 206 278300 1510.93 733 714 183.7
A 5 243 27814 147.51 733 714 183.7
A 11 31 19167 100.44 733 714 183.7
B 10 247 219369 1404.75 728 702 155.7
B 0 213 86223 549.4 728 702 155.7
B 7 0 80358 511.72 728 702 155.7
C 1 241 1034699 5496.1 690 684 188.1
C 13 3 874046 4642.18 690 684 188.1
C 4 5 262655 1392.45 690 684 188.1
D 8 176 6714886 47633.11 490 466 141.0
D 7 70 1813978 12865.33 490 466 141.0
D 15 108 259832 1839.98 490 466 141.0

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