ASTROSAT CZTI

Data Quality Report

Orbit 16937

Creation date: 2024-06-27T17:29:44.006561
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/AS1T03_013T01_9000002514_16937cztM0_level2.evt modeM0/AS1T03_013T01_9000002514_16937cztM0_level2_quad_clean.evt
Size (bytes)477,826,56091,638,720
Size455.7 MB 87.4 MB
Events in quadrant A3,708,636595,053
Events in quadrant B3,063,585602,922
Events in quadrant C3,438,396575,287
Events in quadrant D3,834,941564,459

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151851
B0130531
C0142072
D0156021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62741712.725534%
B6275881.402390%
C62741141.817023%
D6274811.291042%

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 7220 6277 51 51 0.71% 0.81%
B 7221 6278 2 2 0.03% 0.03%
C 7220 6277 0 0 0.00% 0.00%
D 7220 6277 2 2 0.03% 0.03%

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 772751 5036.02 755 738 153.3
A 0 23 31847 202.93 755 738 153.3
A 0 226 8613 51.37 755 738 153.3
B 0 197 47732 333.46 747 728 141.0
B 15 35 28138 194.45 747 728 141.0
B 0 229 24250 166.87 747 728 141.0
C 3 233 542550 3303.74 713 716 164.0
C 14 238 111030 672.62 713 716 164.0
C 13 61 5068 26.54 713 716 164.0
D 1 52 1005785 5679.05 730 709 177.0
D 2 152 30729 169.62 730 709 177.0
D 2 234 30123 166.2 730 709 177.0

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