ASTROSAT CZTI

Data Quality Report

Orbit 37275

Creation date: 2024-06-27T21:37:46.627755
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/AS1A10_103T03_9000005296_37275cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37275cztM0_level2_quad_clean.evt
Size (bytes)464,768,64062,049,600
Size443.2 MB 59.2 MB
Events in quadrant A2,758,059393,934
Events in quadrant B2,693,108400,087
Events in quadrant C2,808,393412,994
Events in quadrant D5,481,624325,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110503
B0108492
C0111572
D0194922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927150.304445%
B4927220.446519%
C4927591.197483%
D4927110322.386848%

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 7050 4928 9 9 0.13% 0.18%
B 7050 4928 6 6 0.09% 0.12%
C 7050 4928 47 47 0.67% 0.95%
D 7050 4928 1019 1019 14.45% 20.68%

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 257516 2139.05 609 599 120.1
A 9 143 107183 887.4 609 599 120.1
A 13 248 15490 123.98 609 599 120.1
B 0 213 177550 1568.12 606 594 112.8
B 0 190 96038 845.79 606 594 112.8
B 12 111 12987 109.82 606 594 112.8
C 15 214 211632 1550.22 598 604 136.1
C 0 10 178799 1309.03 598 604 136.1
C 14 254 71935 524.0 598 604 136.1
D 10 253 3055297 23764.76 536 523 128.5
D 2 250 83951 649.03 536 523 128.5
D 2 153 72497 559.93 536 523 128.5

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