ASTROSAT CZTI

Data Quality Report

Orbit 08067

Creation date: 2024-06-27T15:27:31.998942
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/AS1A02_055T01_9000001114_08067cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08067cztM0_level2_quad_clean.evt
Size (bytes)606,974,400114,540,480
Size578.9 MB 109.2 MB
Events in quadrant A3,907,274729,037
Events in quadrant B4,089,555747,918
Events in quadrant C3,816,538764,989
Events in quadrant D6,017,206661,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017815276
B018215451
C017474277
D0251581375

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01702
B01704
C01706
D01702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81663133.832966%
B81172783.424911%
C8167821.004041%
D803893311.607365%

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 8441 8265 4 4 0.05% 0.05%
B 8441 8251 2 2 0.02% 0.02%
C 8441 8263 0 0 0.00% 0.00%
D 8440 8187 628 628 7.44% 7.67%

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 14 111 177409 882.79 968 944 199.9
A 0 226 9065 40.63 968 944 199.9
A 12 194 8874 39.67 968 944 199.9
B 4 81 186348 973.02 982 957 190.5
B 11 51 50249 258.71 982 957 190.5
B 0 214 27492 139.27 982 957 190.5
C 1 16 24824 106.1 964 966 224.9
C 8 128 16455 68.88 964 966 224.9
C 8 112 7592 29.47 964 966 224.9
D 1 52 2046557 8663.91 870 850 236.1
D 1 83 521873 2206.62 870 850 236.1
D 7 71 83340 349.36 870 850 236.1

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