ASTROSAT CZTI

Data Quality Report

Orbit 36233

Creation date: 2022-06-11T06:00:57.822777
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/AS1A11_080T02_9000005176_36233cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36233cztM0_level2_quad_clean.evt
Size (bytes)487,232,64053,311,680
Size464.7 MB 50.8 MB
Events in quadrant A2,606,252330,680
Events in quadrant B4,095,110324,273
Events in quadrant C2,736,879323,397
Events in quadrant D4,986,193292,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106743
B0153862
C0108622
D0181842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4889300.613622%
B48894729.654326%
C48891062.168133%
D48894799.797505%

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 7042 4890 19 19 0.27% 0.39%
B 7042 4890 311 311 4.42% 6.36%
C 7042 4890 75 75 1.07% 1.53%
D 7042 4890 506 506 7.19% 10.35%

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 165256 1395.39 585 574 118.0
A 7 16 135098 1139.86 585 574 118.0
A 9 143 33920 282.55 585 574 118.0
B 5 236 954484 8877.08 570 555 107.5
B 5 172 555581 5164.97 570 555 107.5
B 0 213 150236 1392.9 570 555 107.5
C 0 10 310327 2344.72 569 573 132.1
C 15 214 204410 1542.97 569 573 132.1
C 13 61 3808 24.49 569 573 132.1
D 12 227 1242103 9229.17 546 529 134.5
D 12 6 464863 3451.6 546 529 134.5
D 2 250 357220 2651.44 546 529 134.5

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