ASTROSAT CZTI

Data Quality Report

Orbit 20658

Creation date: 2024-06-27T18:17:58.364039
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/AS1A05_022T09_9000003058_20658cztM0_level2.evt modeM0/AS1A05_022T09_9000003058_20658cztM0_level2_quad_clean.evt
Size (bytes)289,952,64065,280,960
Size276.5 MB 62.3 MB
Events in quadrant A2,005,316434,034
Events in quadrant B2,086,334435,651
Events in quadrant C1,960,459423,449
Events in quadrant D2,447,697393,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086491
B087711
C084621
D099941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4114330.802139%
B4114651.579971%
C4114451.093826%
D41142476.003889%

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 4874 4115 5 5 0.10% 0.12%
B 4874 4115 7 7 0.14% 0.17%
C 4874 4115 0 0 0.00% 0.00%
D 4874 4115 70 70 1.44% 1.70%

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 5 16 53938 523.9 500 489 102.0
A 12 16 13874 131.2 500 489 102.0
A 8 205 7732 70.99 500 489 102.0
B 7 220 72607 751.02 497 484 96.0
B 0 219 13214 132.56 497 484 96.0
B 12 111 11137 110.93 497 484 96.0
C 14 238 76386 669.93 481 483 113.3
C 13 61 3541 26.99 481 483 113.3
C 7 247 3039 22.56 481 483 113.3
D 1 20 503701 4465.94 462 448 112.7
D 13 153 56329 495.89 462 448 112.7
D 1 52 51666 454.51 462 448 112.7

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