ASTROSAT CZTI

Data Quality Report

Orbit 01406

Creation date: 2024-06-27T14:12:12.431788
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/AS1G04_003T01_9000000234_01406cztM0_level2.evt modeM0/AS1G04_003T01_9000000234_01406cztM0_level2_quad_clean.evt
Size (bytes)1,174,294,080105,408,000
Size1.1 GB 100.5 MB
Events in quadrant A11,077,942662,309
Events in quadrant B8,691,114689,586
Events in quadrant C7,875,380681,799
Events in quadrant D7,453,896669,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378933
B0307972
C0284162
D0271912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70304356.187767%
B7030580.825036%
C703030.042674%
D7030751.066856%

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 7910 7030 1517 1517 19.18% 21.58%
B 7910 7031 297 297 3.75% 4.22%
C 7910 7031 137 137 1.73% 1.95%
D 7910 7031 288 288 3.64% 4.10%

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 15 127 2096363 4335.62 2007 2017 483.1
A 4 32 1179647 2437.88 2007 2017 483.1
A 0 36 42031 82.84 2007 2017 483.1
B 5 191 135678 263.36 2158 2167 507.0
B 6 53 91937 177.08 2158 2167 507.0
B 8 4 84503 162.41 2158 2167 507.0
C 15 241 260992 481.48 1938 2007 537.9
C 3 111 21280 35.83 1938 2007 537.9
C 3 79 17319 28.47 1938 2007 537.9
D 9 66 338823 589.91 1844 1911 571.1
D 15 217 103017 177.03 1844 1911 571.1
D 1 47 29173 47.73 1844 1911 571.1

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