ASTROSAT CZTI

Data Quality Report

Orbit 40666

Creation date: 2024-06-27T22:18:53.879602
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/AS1A12_029T02_9000005558_40666cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40666cztM0_level2_quad_clean.evt
Size (bytes)335,168,64085,518,720
Size319.6 MB 81.6 MB
Events in quadrant A2,857,208588,130
Events in quadrant B2,816,455605,155
Events in quadrant C2,929,084570,259
Events in quadrant D3,386,461450,923

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115293
B0118412
C0120562
D0136902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534950.093475%
B5349430.803889%
C5349871.626472%
D535090916.990654%

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 7291 5350 5 5 0.07% 0.09%
B 7291 5350 18 18 0.25% 0.34%
C 7291 5350 85 85 1.17% 1.59%
D 7292 5351 143 143 1.96% 2.67%

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 10 83 498506 4101.29 591 579 121.4
A 12 189 27942 225.38 591 579 121.4
A 2 79 25136 202.27 591 579 121.4
B 0 229 265533 2337.43 585 568 113.4
B 0 190 94485 828.5 585 568 113.4
B 0 230 78578 688.18 585 568 113.4
C 14 254 421115 3146.53 571 574 133.7
C 15 214 232666 1736.54 571 574 133.7
C 0 10 16839 121.7 571 574 133.7
D 12 227 553368 4225.95 524 508 130.8
D 12 191 193668 1476.47 524 508 130.8
D 13 249 189374 1443.65 524 508 130.8

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