ASTROSAT CZTI

Data Quality Report

Orbit 34397

Creation date: 2022-02-07T06:07:49.683451
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_085T01_9000004910_34397cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34397cztM0_level2_quad_clean.evt
Size (bytes)616,492,80070,692,480
Size587.9 MB 67.4 MB
Events in quadrant A2,595,976464,772
Events in quadrant B3,141,796463,343
Events in quadrant C2,870,815462,782
Events in quadrant D9,678,396352,684

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115503
B0130422
C0118332
D0327332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5667130.229398%
B56671041.835186%
C5667180.317628%
D5667201035.468502%

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 7221 5668 3 3 0.04% 0.05%
B 7221 5668 67 67 0.93% 1.18%
C 7221 5668 9 9 0.12% 0.16%
D 7221 5668 1987 1987 27.52% 35.06%

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 39606 296.41 650 638 131.5
A 10 83 34144 254.86 650 638 131.5
A 13 254 10464 74.74 650 638 131.5
B 5 172 328078 2635.98 647 629 124.2
B 0 190 133850 1072.44 647 629 124.2
B 5 255 43465 344.83 647 629 124.2
C 15 214 239852 1620.71 635 638 147.6
C 0 10 88119 592.7 635 638 147.6
C 7 220 23351 153.88 635 638 147.6
D 7 223 5979006 46416.36 526 511 128.8
D 8 195 1029421 7988.34 526 511 128.8
D 13 249 145871 1128.56 526 511 128.8

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