ASTROSAT CZTI

Data Quality Report

Orbit 51907

Creation date: 2025-05-03T16:42:02.995825
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_011T05_9000006466_51907cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51907cztM0_level2_quad_clean.evt
Size (bytes)42,266,8802,589,120
Size40.3 MB 2.5 MB
Events in quadrant A612,280386
Events in quadrant B141,90625,861
Events in quadrant C136,76221,150
Events in quadrant D647,3012,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020240
B06410
C06401
D021220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29127092.783505%
B29241.369863%
C29131.030928%
D29122175.945017%

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 290 290 172 172 59.31% 59.31%
B 292 292 4 4 1.37% 1.37%
C 291 291 3 3 1.03% 1.03%
D 290 290 202 202 69.66% 69.66%

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 95 502635 117062.75 11 10 4.3
A 12 80 34705 8080.56 11 10 4.3
A 12 3 13267 3087.59 11 10 4.3
B 0 153 14538 1796.61 28 27 8.1
B 12 32 6364 784.58 28 27 8.1
B 8 128 3633 446.46 28 27 8.1
C 15 224 12326 1384.38 27 26 8.9
C 13 3 10497 1178.53 27 26 8.9
C 15 219 4259 476.43 27 26 8.9
D 12 17 415800 66802.54 16 15 6.2
D 6 42 123542 19846.6 16 15 6.2
D 2 172 12224 1961.57 16 15 6.2

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