ASTROSAT CZTI

Data Quality Report

Orbit 53314

Creation date: 2025-08-10T13:57:51.652859
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_011T08_9000006492_53314cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53314cztM0_level2_quad_clean.evt
Size (bytes)674,303,040109,304,640
Size643.1 MB 104.2 MB
Events in quadrant A4,322,571739,402
Events in quadrant B5,930,714775,240
Events in quadrant C10,139,052554,144
Events in quadrant D3,951,903688,370

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187663
B0233533
C0355153
D0178404

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79413073.866012%
B79425997.542181%
C7942217727.411231%
D79411101.385216%

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 9061 7944 179 179 1.98% 2.25%
B 9062 7945 263 263 2.90% 3.31%
C 9061 7944 1812 1812 20.00% 22.81%
D 9061 7944 68 68 0.75% 0.86%

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 12 115 553492 2668.4 830 806 207.1
A 8 229 94557 452.63 830 806 207.1
A 3 14 90139 431.3 830 806 207.1
B 13 245 562780 3263.17 821 792 172.2
B 4 206 452595 2623.39 821 792 172.2
B 2 249 450431 2610.82 821 792 172.2
C 1 241 3223433 16392.88 709 701 196.6
C 15 224 2578603 13112.86 709 701 196.6
C 12 254 535959 2722.66 709 701 196.6
D 3 12 200317 860.67 815 779 231.8
D 14 52 96197 411.57 815 779 231.8
D 5 173 64237 273.72 815 779 231.8

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