ASTROSAT CZTI

Data Quality Report

Orbit 48064

Creation date: 2024-08-19T09:11:37.811635
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/AS1A13_024T01_9000006394_48064cztM0_level2.fits modeM0/AS1A13_024T01_9000006394_48064cztM0_level2_quad_clean.evt
Size (bytes)1,162,872,000234,768,960
Size1.1 GB 223.9 MB
Events in quadrant A16,071,1371,495,427
Events in quadrant B7,618,5141,623,365
Events in quadrant C8,154,4681,537,206
Events in quadrant D9,987,5441,368,452

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03308
B03306
C032812
D032911

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0621842235
B034476938
C036404934
D0411811021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0141
C0141
D0141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1561910386.645752%
B157265913.758108%
C157136003.818494%
D1572710046.383926%

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 17311 15773 192 192 1.11% 1.22%
B 17379 15854 46 46 0.26% 0.29%
C 17365 15843 147 147 0.85% 0.93%
D 17379 15865 493 493 2.84% 3.11%

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 8677543 23554.92 1752 1712 368.3
A 13 248 550811 1490.81 1752 1712 368.3
A 7 3 30584 78.39 1752 1712 368.3
B 7 221 196685 541.62 1783 1718 360.0
B 5 255 179207 493.06 1783 1718 360.0
B 5 32 63361 171.24 1783 1718 360.0
C 12 2 792857 1901.58 1761 1769 416.0
C 15 208 315735 754.7 1761 1769 416.0
C 14 254 64550 150.91 1761 1769 416.0
D 2 249 1610273 3630.35 1748 1687 443.1
D 2 165 610650 1374.34 1748 1687 443.1
D 13 29 427122 960.15 1748 1687 443.1

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