ASTROSAT CZTI

Data Quality Report

Orbit 40774

Creation date: 2024-06-27T22:20:17.867359
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/AS1C07_001T10_9000005566_40774cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40774cztM0_level2_quad_clean.evt
Size (bytes)494,487,36083,456,640
Size471.6 MB 79.6 MB
Events in quadrant A2,923,972608,350
Events in quadrant B3,556,477599,152
Events in quadrant C7,166,338465,693
Events in quadrant D4,224,502463,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122643
B0143972
C0250212
D0163542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5563170.305591%
B55633105.572533%
C5563147426.496495%
D5563101818.299479%

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 7206 5564 4 4 0.06% 0.07%
B 7206 5564 248 248 3.44% 4.46%
C 7206 5564 1432 1432 19.87% 25.74%
D 7206 5564 317 317 4.40% 5.70%

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 528399 4224.82 607 594 124.9
A 12 189 21938 170.85 607 594 124.9
A 13 254 8202 60.9 607 594 124.9
B 5 255 919748 7940.98 593 576 115.8
B 0 229 202642 1745.7 593 576 115.8
B 4 171 39528 336.52 593 576 115.8
C 9 187 2876862 23187.98 535 537 124.0
C 14 254 1934193 15588.49 535 537 124.0
C 15 214 214583 1725.57 535 537 124.0
D 12 227 1383996 10319.79 542 526 134.1
D 12 191 176227 1310.61 542 526 134.1
D 2 153 154809 1150.85 542 526 134.1

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