ASTROSAT CZTI

Data Quality Report

Orbit 27285

Creation date: 2024-06-27T19:38:26.464856
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_243T01_9000003918_27285cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27285cztM0_level2_quad_clean.evt
Size (bytes)906,557,760188,066,880
Size864.6 MB 179.4 MB
Events in quadrant A5,534,6281,309,796
Events in quadrant B6,546,0081,314,822
Events in quadrant C5,393,4511,222,294
Events in quadrant D9,299,3801,149,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227850
B0259340
C0223000
D0344060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100912182.160341%
B100925095.043599%
C100922422.397939%
D10092128612.742767%

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 12736 10092 4 4 0.03% 0.04%
B 12737 10093 152 152 1.19% 1.51%
C 12737 10093 5 5 0.04% 0.05%
D 12737 10094 990 990 7.77% 9.81%

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 13 170 42359 145.88 1422 1402 280.8
A 13 254 15626 50.66 1422 1402 280.8
A 0 226 12376 39.09 1422 1402 280.8
B 10 245 1086604 4225.15 1379 1351 256.9
B 15 32 76149 291.21 1379 1351 256.9
B 12 111 29487 109.54 1379 1351 256.9
C 14 238 217178 713.51 1320 1334 302.5
C 15 208 30929 97.83 1320 1334 302.5
C 13 61 9102 25.68 1320 1334 302.5
D 1 52 2239051 7136.68 1305 1274 313.6
D 12 233 1849281 5893.63 1305 1274 313.6
D 2 250 184376 583.95 1305 1274 313.6

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