ASTROSAT CZTI

Data Quality Report

Orbit 27174

Creation date: 2024-06-27T19:37:21.968738
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_27174cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27174cztM0_level2_quad_clean.evt
Size (bytes)261,069,12028,909,440
Size249.0 MB 27.6 MB
Events in quadrant A3,283,406133,716
Events in quadrant B1,339,904194,241
Events in quadrant C1,308,005185,171
Events in quadrant D1,799,903177,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115080
B056210
C055690
D071720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A255987834.310277%
B25591415.509965%
C25591385.392732%
D25591445.627198%

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 2714 2561 674 674 24.83% 26.32%
B 2714 2561 0 0 0.00% 0.00%
C 2714 2561 0 0 0.00% 0.00%
D 2714 2561 71 71 2.62% 2.77%

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 6 16 2204599 37918.0 276 270 58.1
A 13 248 5104 83.15 276 270 58.1
A 13 254 4125 66.31 276 270 58.1
B 12 111 8381 118.59 336 327 67.9
B 0 189 8354 118.19 336 327 67.9
B 11 111 7056 99.08 336 327 67.9
C 14 238 49249 610.1 323 326 80.2
C 13 61 2201 23.38 323 326 80.2
C 15 208 1240 11.4 323 326 80.2
D 1 52 258116 3151.3 319 310 81.8
D 2 250 248360 3032.05 319 310 81.8
D 7 38 38542 467.33 319 310 81.8

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