ASTROSAT CZTI

Data Quality Report

Orbit 20220216_A05_115T02_9000004934_level2

Creation date: 2022-02-18T16:04:16.958903
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_115T02_9000004934cztM0_level2_bc.evt modeM0/AS1A05_115T02_9000004934cztM0_level2_quad_clean.evt
Size (bytes)2,072,108,160591,658,560
Size1.9 GB 564.2 MB
Events in quadrant A9,760,4913,797,392
Events in quadrant B13,241,7723,765,044
Events in quadrant C12,043,2933,814,800
Events in quadrant D24,762,0143,570,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08840
B08840
C08840
D08840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0902300
B01051990
C0940730
D01398130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01710
C01710
D01710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43322940.216980%
B4332212162.806888%
C433221910.440885%
D4332217313.995660%

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 58884 43328 12 12 0.02% 0.03%
B 58884 43321 127 127 0.22% 0.29%
C 58884 43323 26 26 0.04% 0.06%
D 58884 43321 295 295 0.50% 0.68%

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 336449 652.61 2349 2315 512.0
A 10 83 218422 422.09 2349 2315 512.0
A 13 254 68679 129.62 2349 2315 512.0
B 5 172 2916668 6447.77 2330 2287 452.0
B 0 245 333471 732.71 2330 2287 452.0
B 0 229 238566 522.74 2330 2287 452.0
C 15 214 1841289 3532.09 2303 2292 520.7
C 14 67 515282 985.28 2303 2292 520.7
C 0 10 442416 845.33 2303 2292 520.7
D 8 195 9407357 16602.51 2280 2220 566.5
D 7 80 1153782 2032.81 2280 2220 566.5
D 1 52 907349 1597.79 2280 2220 566.5

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