ASTROSAT CZTI

Data Quality Report

Orbit 35177

Creation date: 2022-03-31T22:54:51.776657
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/AS1C07_001T06_9000005046_35177cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35177cztM0_level2_quad_clean.evt
Size (bytes)773,084,16093,772,800
Size737.3 MB 89.4 MB
Events in quadrant A2,509,531696,050
Events in quadrant B9,206,370518,812
Events in quadrant C2,779,208691,379
Events in quadrant D8,578,487578,577

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106723
B0308402
C0110452
D0290192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5037320.635299%
B5037278955.370260%
C5037851.687512%
D5037177235.179670%

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 7130 5038 20 20 0.28% 0.40%
B 7130 5037 1987 1987 27.87% 39.45%
C 7130 5038 60 60 0.84% 1.19%
D 7130 5038 1823 1823 25.57% 36.18%

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 9 143 84514 703.37 594 583 119.3
A 10 83 84105 699.94 594 583 119.3
A 15 169 30828 253.46 594 583 119.3
B 5 236 7141051 82149.2 466 455 86.9
B 5 172 124368 1425.56 466 455 86.9
B 4 232 43710 497.63 466 455 86.9
C 0 10 246842 1857.0 583 588 132.6
C 15 214 210572 1583.49 583 588 132.6
C 0 207 32004 236.91 583 588 132.6
D 8 195 3039896 22973.53 543 528 132.3
D 10 203 2567509 19402.92 543 528 132.3
D 10 118 282569 2131.85 543 528 132.3

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