ASTROSAT CZTI

Data Quality Report

Orbit 21425

Creation date: 2024-06-27T18:27:41.061113
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/AS1T03_140T01_9000003160_21425cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21425cztM0_level2_quad_clean.evt
Size (bytes)2,019,692,160425,220,480
Size1.9 GB 405.5 MB
Events in quadrant A13,888,7512,840,988
Events in quadrant B13,668,3382,846,163
Events in quadrant C13,827,8542,740,962
Events in quadrant D18,024,3172,659,976

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0571039
B0568367
C0575416
D0705326

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A260623881.488758%
B260624171.600031%
C260624941.895480%
D260637873.019606%

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 31893 26063 0 0 0.00% 0.00%
B 31893 26063 16 16 0.05% 0.06%
C 31893 26066 1 1 0.00% 0.00%
D 31893 26064 671 671 2.10% 2.57%

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 5 168 500543 730.83 3441 3374 680.3
A 11 47 127299 182.17 3441 3374 680.3
A 13 254 40837 55.07 3441 3374 680.3
B 0 190 141495 218.39 3393 3318 632.7
B 0 230 111067 170.3 3393 3318 632.7
B 12 111 73509 110.94 3393 3318 632.7
C 3 233 630230 841.03 3242 3269 745.5
C 14 238 514547 685.85 3242 3269 745.5
C 10 91 48322 60.44 3242 3269 745.5
D 1 52 1759907 2211.84 3314 3232 794.2
D 1 20 845236 1060.17 3314 3232 794.2
D 7 38 753271 944.38 3314 3232 794.2

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