ASTROSAT CZTI

Data Quality Report

Orbit 36852

Creation date: 2024-06-27T21:32:22.459564
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_075T01_9000005244_36852cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36852cztM0_level2_quad_clean.evt
Size (bytes)421,971,84057,525,120
Size402.4 MB 54.9 MB
Events in quadrant A2,768,454467,122
Events in quadrant B818,7818,255
Events in quadrant C2,903,128474,223
Events in quadrant D5,924,542419,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116853
B054042
C0119462
D0212792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5289300.567215%
B52895289100.000000%
C5289621.172244%
D528986116.279070%

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 7110 5290 7 7 0.10% 0.13%
B 7109 5288 1 1 0.01% 0.02%
C 7110 5290 41 41 0.58% 0.78%
D 7110 5290 801 801 11.27% 15.14%

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 243528 1933.07 626 615 125.7
A 13 248 33880 264.72 626 615 125.7
A 15 223 29483 229.72 626 615 125.7
B 12 243 732073 173504.29 12 12 4.2
B 12 144 13766 3259.81 12 12 4.2
B 5 200 5247 1240.74 12 12 4.2
C 15 214 226261 1593.25 616 622 141.6
C 0 10 208112 1465.1 616 622 141.6
C 14 254 25531 175.88 616 622 141.6
D 12 217 1315480 9198.25 585 569 143.0
D 12 17 809629 5659.65 585 569 143.0
D 12 227 605150 4229.25 585 569 143.0

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