ASTROSAT CZTI

Data Quality Report

Orbit 38356

Creation date: 2024-06-27T21:51:35.862064
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/AS1A10_094T24_9000005374_38356cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38356cztM0_level2_quad_clean.evt
Size (bytes)1,563,707,520260,913,600
Size1.5 GB 248.8 MB
Events in quadrant A10,985,0631,817,511
Events in quadrant B9,527,9631,856,383
Events in quadrant C8,152,2241,804,388
Events in quadrant D27,917,9541,258,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427715
B0395654
C0344994
D0950114

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168614502.668881%
B168612091.239547%
C16861430.255026%
D16861465427.602159%

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 22293 16865 391 391 1.75% 2.32%
B 22293 16865 99 99 0.44% 0.59%
C 22293 16865 25 25 0.11% 0.15%
D 22293 16865 5136 5136 23.04% 30.45%

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 15 222 2145619 5733.37 1868 1828 373.9
A 10 83 1140500 3045.27 1868 1828 373.9
A 12 189 171904 454.85 1868 1828 373.9
B 4 170 661110 1853.99 1868 1814 355.6
B 0 183 384285 1075.54 1868 1814 355.6
B 0 229 341752 955.93 1868 1814 355.6
C 15 214 717619 1685.48 1842 1851 424.7
C 12 249 70087 160.68 1842 1851 424.7
C 0 207 66665 152.62 1842 1851 424.7
D 10 203 16325929 39642.86 1681 1632 411.8
D 12 227 2176028 5280.43 1681 1632 411.8
D 2 16 951692 2307.18 1681 1632 411.8

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