ASTROSAT CZTI

Data Quality Report

Orbit 37055

Creation date: 2024-06-27T21:34:40.618257
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/AS1A11_046T02_9000005274_37055cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37055cztM0_level2_quad_clean.evt
Size (bytes)603,685,44049,705,920
Size575.7 MB 47.4 MB
Events in quadrant A3,056,887299,027
Events in quadrant B3,518,211297,895
Events in quadrant C3,132,964291,346
Events in quadrant D8,208,229236,822

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123563
B0137512
C0124182
D0281632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5417150.276906%
B54171903.507476%
C5417420.775337%
D5417188834.853240%

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 7300 5418 7 7 0.10% 0.13%
B 7300 5418 124 124 1.70% 2.29%
C 7300 5418 40 40 0.55% 0.74%
D 7300 5418 1666 1666 22.82% 30.75%

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 263007 1912.1 683 671 137.2
A 11 254 95626 692.1 683 671 137.2
A 9 143 51813 372.76 683 671 137.2
B 5 172 496428 3909.08 664 647 126.8
B 5 184 104260 816.96 664 647 126.8
B 0 229 86434 676.4 664 647 126.8
C 15 214 232251 1557.29 650 655 148.7
C 0 10 118395 791.7 650 655 148.7
C 0 207 113090 756.03 650 655 148.7
D 12 17 2886570 20822.0 571 556 138.6
D 6 112 1672275 12061.11 571 556 138.6
D 1 52 824424 5944.04 571 556 138.6

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