ASTROSAT CZTI

Data Quality Report

Orbit 20462

Creation date: 2024-06-27T18:15:40.833315
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_198T01_9000003024_20462cztM0_level2.evt modeM0/AS1A05_198T01_9000003024_20462cztM0_level2_quad_clean.evt
Size (bytes)500,748,48070,894,080
Size477.6 MB 67.6 MB
Events in quadrant A3,290,522435,892
Events in quadrant B3,726,820431,933
Events in quadrant C3,413,631411,631
Events in quadrant D4,282,252402,844

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139622
B0154662
C0143712
D0172412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6656560.841346%
B66561161.742788%
C66561051.577524%
D66562804.206731%

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 7681 6656 0 0 0.00% 0.00%
B 7681 6656 15 15 0.20% 0.23%
C 7681 6656 0 0 0.00% 0.00%
D 7681 6656 207 207 2.69% 3.11%

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 15 222 16172 90.34 849 833 169.8
A 13 254 8868 47.32 849 833 169.8
A 0 226 7347 38.37 849 833 169.8
B 0 197 148302 922.54 839 819 159.9
B 7 220 133511 830.02 839 819 159.9
B 0 189 108014 670.53 839 819 159.9
C 14 238 126492 664.85 809 816 189.0
C 3 9 78434 410.61 809 816 189.0
C 3 233 51561 268.45 809 816 189.0
D 15 0 950346 4804.16 811 790 197.7
D 1 52 120871 607.54 811 790 197.7
D 13 153 43235 214.75 811 790 197.7

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