ASTROSAT CZTI

Data Quality Report

Orbit 54245

Creation date: 2025-10-08T10:43:41.397787
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_54245cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54245cztM0_level2_quad_clean.evt
Size (bytes)847,540,80091,946,880
Size808.3 MB 87.7 MB
Events in quadrant A5,902,512638,342
Events in quadrant B6,152,305705,841
Events in quadrant C6,103,960588,946
Events in quadrant D12,641,690335,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227730
B0234410
C0234010
D0426610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A739874210.029738%
B73995166.973915%
C739983211.244763%
D7399361448.844438%

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 7398 7398 585 585 7.91% 7.91%
B 7399 7399 393 393 5.31% 5.31%
C 7399 7399 781 781 10.56% 10.56%
D 7399 7399 3149 3149 42.56% 42.56%

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 1784056 9778.17 737 718 182.4
A 13 248 484374 2651.92 737 718 182.4
A 12 17 267329 1461.85 737 718 182.4
B 7 0 1154539 7320.32 747 723 157.6
B 5 172 1141181 7235.57 747 723 157.6
B 14 167 248288 1570.66 747 723 157.6
C 1 241 1784483 9096.39 715 705 196.1
C 15 198 394262 2006.95 715 705 196.1
C 15 189 287749 1463.78 715 705 196.1
D 8 176 8190644 52381.21 548 524 156.4
D 3 12 873892 5585.76 548 524 156.4
D 2 62 775161 4954.31 548 524 156.4

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