ASTROSAT CZTI

Data Quality Report

Orbit 33790

Creation date: 2024-06-27T20:52:42.436429
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/AS1A11_086T01_9000004820_33790cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33790cztM0_level2_quad_clean.evt
Size (bytes)377,856,00054,843,840
Size360.4 MB 52.3 MB
Events in quadrant A2,316,041362,628
Events in quadrant B3,536,924337,432
Events in quadrant C1,803,945376,293
Events in quadrant D3,550,917338,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02912
B02710
C02910
D02910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012149
B012052
C012048
D011949

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181118713
B0205887778
C0135825961
D02360110695

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34882156.163991%
B343661617.927823%
C3574300.839396%
D33522266.742243%

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 8859 3679 174 174 1.96% 4.73%
B 8859 3690 562 562 6.34% 15.23%
C 8852 3785 24 24 0.27% 0.63%
D 8855 3542 254 254 2.87% 7.17%

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 15 237 658072 8739.22 369 363 75.3
A 15 169 206169 2734.61 369 363 75.3
A 7 16 12217 157.5 369 363 75.3
B 0 197 1450712 21186.95 352 342 68.5
B 5 255 347344 5068.99 352 342 68.5
B 5 172 274112 3999.22 352 342 68.5
C 15 214 152984 1723.57 380 383 88.5
C 0 10 86002 967.03 380 383 88.5
C 3 233 36508 408.02 380 383 88.5
D 12 235 944581 11058.56 345 335 85.4
D 8 195 804493 9417.91 345 335 85.4
D 2 250 196737 2300.17 345 335 85.4

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