ASTROSAT CZTI

Data Quality Report

Orbit 40766

Creation date: 2024-06-27T22:20:12.226974
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/AS1C07_001T10_9000005566_40766cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40766cztM0_level2_quad_clean.evt
Size (bytes)506,119,68079,122,240
Size482.7 MB 75.5 MB
Events in quadrant A2,783,801601,921
Events in quadrant B2,702,403631,164
Events in quadrant C8,386,690345,068
Events in quadrant D4,455,539451,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115223
B0116222
C0285132
D0169112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5218120.229973%
B5218671.284017%
C5218239045.802990%
D5218104520.026830%

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 7340 5219 5 5 0.07% 0.10%
B 7340 5219 37 37 0.50% 0.71%
C 7340 5219 2173 2173 29.60% 41.64%
D 7340 5218 260 260 3.54% 4.98%

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 493306 4231.81 567 558 116.4
A 7 3 39165 331.56 567 558 116.4
A 6 10 36382 307.66 567 558 116.4
B 4 171 152324 1397.7 570 555 108.6
B 0 229 98097 898.3 570 555 108.6
B 0 190 95262 872.19 570 555 108.6
C 9 187 6478629 67042.81 419 421 96.6
C 15 214 170610 1761.28 419 421 96.6
C 0 10 57396 589.63 419 421 96.6
D 13 249 1181992 9927.44 485 472 119.0
D 12 227 476792 4002.16 485 472 119.0
D 2 249 375768 3153.33 485 472 119.0

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