ASTROSAT CZTI

Data Quality Report

Orbit 40577

Creation date: 2024-06-27T22:17:47.550306
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_054T02_9000005550_40577cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40577cztM0_level2_quad_clean.evt
Size (bytes)305,804,16089,743,680
Size291.6 MB 85.6 MB
Events in quadrant A2,999,011625,979
Events in quadrant B2,672,029641,608
Events in quadrant C2,554,545596,118
Events in quadrant D2,696,563496,363

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118753
B0109452
C0105954
D0114142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5095170.333660%
B5095180.353288%
C5093170.333791%
D509558111.403337%

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 9282 5097 2 2 0.02% 0.04%
B 9282 5097 8 8 0.09% 0.16%
C 9282 5097 12 12 0.13% 0.24%
D 9282 5097 35 35 0.38% 0.69%

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 481114 3989.92 594 585 120.4
A 12 189 153068 1266.09 594 585 120.4
A 15 191 45827 375.65 594 585 120.4
B 0 190 204478 1839.67 585 571 110.8
B 0 230 70354 629.59 585 571 110.8
B 3 112 26505 233.98 585 571 110.8
C 15 214 225567 1706.7 567 571 131.8
C 14 254 58793 441.64 567 571 131.8
C 0 10 47040 352.49 567 571 131.8
D 12 227 244626 1852.66 538 522 131.8
D 12 191 173496 1312.81 538 522 131.8
D 2 250 62871 473.21 538 522 131.8

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