ASTROSAT CZTI

Data Quality Report

Orbit 17765

Creation date: 2024-06-27T17:40:38.303568
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_015T01_9000002650_17765cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17765cztM0_level2_quad_clean.evt
Size (bytes)341,576,64049,429,440
Size325.8 MB 47.1 MB
Events in quadrant A2,297,662293,066
Events in quadrant B2,574,671304,427
Events in quadrant C2,526,017280,539
Events in quadrant D2,623,571285,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010915
B010915
C011018
D011117

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114961499
B0122091515
C0124471920
D0129361952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47353036.399155%
B47463216.763590%
C47053788.034006%
D47253146.645503%

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 7753 4890 1 1 0.01% 0.02%
B 7759 4899 9 9 0.12% 0.18%
C 7757 4858 35 35 0.45% 0.72%
D 7754 4878 31 31 0.40% 0.64%

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 15 174 18197 144.12 592 576 122.3
A 0 226 5084 36.87 592 576 122.3
A 3 137 4579 32.74 592 576 122.3
B 7 220 105856 904.98 588 569 116.3
B 15 35 67248 573.13 588 569 116.3
B 0 219 24663 207.1 588 569 116.3
C 4 254 222795 1686.56 555 557 131.8
C 14 238 83020 625.81 555 557 131.8
C 5 218 43614 326.76 555 557 131.8
D 1 52 190979 1376.98 574 558 138.3
D 7 238 112314 808.13 574 558 138.3
D 2 165 33400 237.49 574 558 138.3

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