ASTROSAT CZTI

Data Quality Report

Orbit 53944

Creation date: 2025-09-17T20:33:37.679857
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_057T04_9000006508_53944cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53944cztM0_level2_quad_clean.evt
Size (bytes)959,235,84066,795,840
Size914.8 MB 63.7 MB
Events in quadrant A4,616,837473,716
Events in quadrant B5,255,832482,620
Events in quadrant C7,825,341417,533
Events in quadrant D17,154,62961,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020542862
B022425858
C0307031232
D0604083675

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01762
B01742
C01775
D01764

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055
B155
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85002022.376471%
B84823624.267861%
C8456144717.112110%
D8302699884.292941%

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 11999 8602 183 183 1.53% 2.13%
B 12001 8592 273 273 2.27% 3.18%
C 11998 8563 1276 1276 10.64% 14.90%
D 11981 8391 4704 4704 39.26% 56.06%

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 15 174 621475 2844.77 866 844 218.2
A 3 14 111893 509.01 866 844 218.2
A 8 6 98190 446.2 866 844 218.2
B 0 213 1076908 5944.32 852 823 181.0
B 1 223 200020 1100.37 852 823 181.0
B 0 155 140588 772.07 852 823 181.0
C 1 241 2966485 13686.25 780 773 216.7
C 15 148 758206 3495.42 780 773 216.7
C 15 157 213057 979.65 780 773 216.7
D 8 176 14087297 155886.31 298 284 90.4
D 10 172 671918 7432.27 298 284 90.4
D 6 239 346172 3827.58 298 284 90.4

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