ASTROSAT CZTI

Data Quality Report

Orbit 25657

Creation date: 2024-06-27T19:20:01.807740
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/AS1A09_013T02_9000003734_25657cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25657cztM0_level2_quad_clean.evt
Size (bytes)243,126,72060,094,080
Size231.9 MB 57.3 MB
Events in quadrant A1,817,875398,408
Events in quadrant B1,716,484399,474
Events in quadrant C1,706,037379,096
Events in quadrant D1,863,678375,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077220
B076280
C075890
D079270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A378160.158688%
B378230.079323%
C3782110.290851%
D378220.052882%

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 3781 3781 0 0 0.00% 0.00%
B 3782 3782 0 0 0.00% 0.00%
C 3782 3782 0 0 0.00% 0.00%
D 3782 3782 1 1 0.03% 0.03%

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 8 192 148209 1677.54 432 422 88.1
A 13 254 5489 57.52 432 422 88.1
A 3 137 3848 38.89 432 422 88.1
B 0 245 21869 256.46 429 417 83.6
B 12 111 10075 115.46 429 417 83.6
B 11 111 8945 101.95 429 417 83.6
C 14 238 67264 676.71 415 416 98.8
C 3 233 19509 193.28 415 416 98.8
C 13 61 2793 24.06 415 416 98.8
D 8 195 164935 1581.84 422 408 104.0
D 1 52 79753 762.86 422 408 104.0
D 2 234 18006 169.2 422 408 104.0

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