ASTROSAT CZTI

Data Quality Report

Orbit 26946

Creation date: 2024-06-27T19:34:48.156950
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_134T01_9000003896_26946cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26946cztM0_level2_quad_clean.evt
Size (bytes)2,355,756,480205,188,480
Size2.2 GB 195.7 MB
Events in quadrant A28,884,517956,266
Events in quadrant B17,522,7861,308,732
Events in quadrant C8,469,6301,432,452
Events in quadrant D15,287,5901,301,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0977950
B0632830
C0366880
D0570920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17566993256.541045%
B17567410723.379063%
C175672211.258041%
D1756715658.908749%

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 19461 17566 7771 7771 39.93% 44.24%
B 19462 17568 3357 3357 17.25% 19.11%
C 19462 17569 21 21 0.11% 0.12%
D 19462 17569 1477 1477 7.59% 8.41%

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 14 235 23055291 78559.05 1463 1436 293.5
A 8 192 73397 245.22 1463 1436 293.5
A 5 168 46881 154.86 1463 1436 293.5
B 0 189 9255629 25084.76 1947 1898 368.9
B 10 245 311326 838.79 1947 1898 368.9
B 0 229 73246 193.41 1947 1898 368.9
C 14 238 321955 675.97 2029 2040 473.3
C 0 207 110326 228.8 2029 2040 473.3
C 15 208 94211 194.75 2029 2040 473.3
D 1 52 2699440 5670.64 1987 1936 475.7
D 2 250 1885494 3959.58 1987 1936 475.7
D 7 80 1837214 3858.08 1987 1936 475.7

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