ASTROSAT CZTI

Data Quality Report

Orbit 34641

Creation date: 2022-02-23T18:11:51.818577
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/AS1T05_008T01_9000004956_34641cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34641cztM0_level2_quad_clean.evt
Size (bytes)453,608,64048,386,880
Size432.6 MB 46.1 MB
Events in quadrant A2,524,915287,092
Events in quadrant B3,275,217276,883
Events in quadrant C2,820,288278,175
Events in quadrant D4,775,724269,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104023
B0126492
C0110542
D0176632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5038170.337435%
B50382755.458515%
C5038681.349742%
D50381583.136165%

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 7162 5039 5 5 0.07% 0.10%
B 7162 5039 196 196 2.74% 3.89%
C 7162 5039 42 42 0.59% 0.83%
D 7162 5039 117 117 1.63% 2.32%

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 45969 361.87 629 617 125.3
A 9 143 16866 129.65 629 617 125.3
A 15 174 15334 117.43 629 617 125.3
B 5 172 600985 5245.37 604 591 114.5
B 3 112 143441 1248.02 604 591 114.5
B 4 232 36691 315.39 604 591 114.5
C 15 214 214283 1546.96 600 604 138.1
C 0 10 182699 1318.3 600 604 138.1
C 14 67 32663 232.1 600 604 138.1
D 8 195 1422676 8668.63 599 587 164.1
D 7 38 128241 778.14 599 587 164.1
D 10 199 116228 704.91 599 587 164.1

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