ASTROSAT CZTI

Data Quality Report

Orbit 40238

Creation date: 2024-06-27T22:13:59.557094
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/AS1T05_086T01_9000005534_40238cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40238cztM0_level2_quad_clean.evt
Size (bytes)379,676,16094,187,520
Size362.1 MB 89.8 MB
Events in quadrant A3,285,700648,750
Events in quadrant B2,712,464671,102
Events in quadrant C2,658,912630,397
Events in quadrant D4,968,512516,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131362
B0117231
C0112341
D0183451

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5507811.470855%
B5507300.544761%
C550780.145270%
D550772213.110587%

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 7119 5508 54 54 0.76% 0.98%
B 7119 5508 14 14 0.20% 0.25%
C 7119 5508 3 3 0.04% 0.05%
D 7119 5508 645 645 9.06% 11.71%

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 475867 3706.49 618 606 128.2
A 13 248 300100 2335.71 618 606 128.2
A 2 79 85305 660.55 618 606 128.2
B 5 255 113844 937.66 617 600 120.8
B 4 171 97826 805.03 617 600 120.8
B 0 221 30961 251.39 617 600 120.8
C 15 214 238971 1681.72 604 609 141.7
C 0 10 16729 113.73 604 609 141.7
C 9 187 13711 92.44 604 609 141.7
D 12 233 2001944 13933.41 573 558 143.6
D 12 227 481873 3350.86 573 558 143.6
D 13 249 118995 824.54 573 558 143.6

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