ASTROSAT CZTI

Data Quality Report

Orbit 49692

Creation date: 2024-12-10T14:03:00.789559
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/AS1T05_233T01_9000006438_49692cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49692cztM0_level2_quad_clean.evt
Size (bytes)1,141,986,24055,157,760
Size1.1 GB 52.6 MB
Events in quadrant A14,848,536390,613
Events in quadrant B4,009,300638,605
Events in quadrant C7,761,69715,167
Events in quadrant D15,167,799180,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483180
B0163200
C0274770
D0493280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6254545587.224177%
B62543575.708347%
C62556255100.000000%
D6255608497.266187%

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 7268 6253 5289 5289 72.77% 84.58%
B 7269 6254 181 181 2.49% 2.89%
C 7269 6254 559 559 7.69% 8.94%
D 7269 6254 5607 5607 77.14% 89.65%

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 6584740 52021.69 454 440 126.6
A 12 50 1907241 15065.38 454 440 126.6
A 0 98 722284 5703.19 454 440 126.6
B 1 255 359502 2559.12 662 642 140.2
B 10 44 314199 2236.06 662 642 140.2
B 4 206 232408 1652.78 662 642 140.2
C 15 180 2887752 155429.48 35 33 18.6
C 15 190 1725217 92856.83 35 33 18.6
C 15 181 661984 35629.05 35 33 18.6
D 15 40 3228771 40301.29 234 222 80.1
D 15 140 1953500 24382.35 234 222 80.1
D 7 45 1912757 23873.77 234 222 80.1

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