ASTROSAT CZTI

Data Quality Report

Orbit 53679

Creation date: 2025-08-30T23:57:39.840733
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_022T05_9000006504_53679cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53679cztM0_level2_quad_clean.evt
Size (bytes)1,171,886,40079,430,400
Size1.1 GB 75.8 MB
Events in quadrant A13,187,651387,104
Events in quadrant B4,687,449758,181
Events in quadrant C17,337,473145,221
Events in quadrant D7,589,488593,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0444220
B0190560
C0565790
D0277530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7487378650.567651%
B74881061.415598%
C7488613781.957799%
D748877110.296474%

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 7486 7486 3448 3448 46.06% 46.06%
B 7488 7488 63 63 0.84% 0.84%
C 7487 7487 5674 5674 75.78% 75.78%
D 7488 7488 802 802 10.71% 10.71%

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 3 63 7653771 48015.8 634 620 159.4
A 14 254 1382103 8667.41 634 620 159.4
A 3 78 829349 5199.44 634 620 159.4
B 7 0 874515 5132.36 790 762 170.2
B 5 185 176227 1030.67 790 762 170.2
B 7 252 95127 554.29 790 762 170.2
C 1 241 8688286 83760.72 370 368 103.7
C 15 224 4970073 47913.21 370 368 103.7
C 13 3 775147 7469.69 370 368 103.7
D 10 172 1827328 8410.03 753 720 217.2
D 12 34 1607409 7397.48 753 720 217.2
D 7 70 425218 1954.46 753 720 217.2

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