ASTROSAT CZTI

Data Quality Report

Orbit 25941

Creation date: 2024-06-27T19:23:05.577872
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/AS1A07_068T01_9000003760_25941cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25941cztM0_level2_quad_clean.evt
Size (bytes)771,932,16077,460,480
Size736.2 MB 73.9 MB
Events in quadrant A11,703,779293,822
Events in quadrant B3,044,681581,818
Events in quadrant C2,977,466547,909
Events in quadrant D5,234,776489,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389360
B0129700
C0128160
D0197410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171372160.298169%
B6171570.923675%
C6172761.231367%
D617278312.686325%

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 7166 6171 3435 3435 47.93% 55.66%
B 7166 6172 3 3 0.04% 0.05%
C 7167 6173 0 0 0.00% 0.00%
D 7167 6173 645 645 9.00% 10.45%

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 0 13 9724389 99106.04 481 472 98.1
A 12 16 108307 1099.05 481 472 98.1
A 12 194 20222 201.29 481 472 98.1
B 15 33 32295 216.18 762 747 145.9
B 5 172 27820 185.51 762 747 145.9
B 12 111 17358 113.82 762 747 145.9
C 14 238 119621 701.73 726 730 169.4
C 3 233 25559 146.55 726 730 169.4
C 13 61 5127 25.95 726 730 169.4
D 1 52 2590892 15608.59 691 675 165.9
D 2 234 24180 141.64 691 675 165.9
D 7 38 12024 68.39 691 675 165.9

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