ASTROSAT CZTI

Data Quality Report

Orbit 38839

Creation date: 2024-06-27T21:57:06.033696
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_077T06_9000005408_38839cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38839cztM0_level2_quad_clean.evt
Size (bytes)311,927,04091,621,440
Size297.5 MB 87.4 MB
Events in quadrant A2,665,100621,126
Events in quadrant B2,309,807645,728
Events in quadrant C2,467,171615,169
Events in quadrant D3,719,822546,674

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108863
B0100372
C0102802
D0144342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4935150.303951%
B4935140.283688%
C4935180.364742%
D49351493.019250%

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 7088 4936 9 9 0.13% 0.18%
B 7088 4936 7 7 0.10% 0.14%
C 7088 4936 12 12 0.17% 0.24%
D 7088 4936 136 136 1.92% 2.76%

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 382077 3291.86 572 562 115.9
A 13 248 31242 264.72 572 562 115.9
A 9 143 19759 165.64 572 562 115.9
B 5 172 26703 241.22 574 559 108.4
B 12 111 13719 121.42 574 559 108.4
B 0 190 13094 115.65 574 559 108.4
C 15 214 203024 1550.02 564 569 130.6
C 0 10 23075 172.31 564 569 130.6
C 1 23 18626 138.25 564 569 130.6
D 12 227 665392 4956.26 550 535 134.1
D 12 235 368989 2746.69 550 535 134.1
D 5 222 186666 1387.54 550 535 134.1

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