ASTROSAT CZTI

Data Quality Report

Orbit 37520

Creation date: 2024-06-27T21:41:01.943360
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/AS1A09_061T01_9000005330_37520cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37520cztM0_level2_quad_clean.evt
Size (bytes)475,251,84086,241,600
Size453.2 MB 82.2 MB
Events in quadrant A2,917,141577,685
Events in quadrant B3,365,263583,057
Events in quadrant C3,147,361583,995
Events in quadrant D4,628,876520,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117713
B0132182
C0123996
D0171003

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4934280.567491%
B49342635.330361%
C4932951.926196%
D493363212.811676%

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 6996 4935 27 27 0.39% 0.55%
B 6996 4934 206 206 2.94% 4.18%
C 6996 4934 77 77 1.10% 1.56%
D 6996 4935 628 628 8.98% 12.73%

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 10 83 296760 2376.51 610 599 124.6
A 13 248 166702 1332.87 610 599 124.6
A 6 10 39142 309.28 610 599 124.6
B 5 172 644099 5678.42 600 586 113.3
B 0 213 81716 715.9 600 586 113.3
B 0 229 52983 462.36 600 586 113.3
C 14 254 391906 2780.87 604 609 140.7
C 15 214 212156 1503.42 604 609 140.7
C 0 10 94258 665.55 604 609 140.7
D 12 227 1186040 8547.79 562 547 138.7
D 2 249 775060 5584.49 562 547 138.7
D 13 249 210182 1511.53 562 547 138.7

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