ASTROSAT CZTI

Data Quality Report

Orbit 52056

Creation date: 2025-05-13T18:07:29.137795
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_011T06_9000006468_52056cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52056cztM0_level2_quad_clean.evt
Size (bytes)761,163,84069,782,400
Size725.9 MB 66.5 MB
Events in quadrant A3,801,770550,353
Events in quadrant B5,199,971566,202
Events in quadrant C3,551,047531,146
Events in quadrant D15,145,20734,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173641857
B0220622171
C0170941954
D0577678717

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014212
B014212
C014111
D014212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62292033.258950%
B62275969.571222%
C62241792.875964%
D5916559994.641650%

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 7679 6405 102 102 1.33% 1.59%
B 7678 6396 352 352 4.58% 5.50%
C 7575 6390 114 114 1.50% 1.78%
D 7246 6010 5271 5271 72.74% 87.70%

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 8 9 243270 1508.89 641 623 160.8
A 3 14 231923 1438.33 641 623 160.8
A 4 249 156191 967.4 641 623 160.8
B 8 3 939303 7092.79 617 596 132.3
B 12 32 732390 5529.37 617 596 132.3
B 5 185 296226 2233.76 617 596 132.3
C 15 224 742920 4391.28 616 611 169.0
C 13 3 75664 443.99 616 611 169.0
C 12 252 59433 347.97 616 611 169.0
D 15 94 6459208 85673.0 262 250 75.4
D 6 42 4086551 54201.57 262 250 75.4
D 12 17 1737181 23039.02 262 250 75.4

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