ASTROSAT CZTI

Data Quality Report

Orbit 32365

Creation date: 2024-06-27T20:39:23.061581
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/AS1A09_131T01_9000004702_32365cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32365cztM0_level2_quad_clean.evt
Size (bytes)856,500,480108,987,840
Size816.8 MB 103.9 MB
Events in quadrant A7,180,633609,739
Events in quadrant B5,884,062819,291
Events in quadrant C6,181,097688,464
Events in quadrant D6,314,403787,404

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250482
B0216991
C0219631
D0227241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5632224839.914773%
B563258010.298295%
C5632186833.167614%
D56324177.404119%

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 6892 5633 1292 1292 18.75% 22.94%
B 6892 5633 332 332 4.82% 5.89%
C 6892 5633 1088 1088 15.79% 19.31%
D 6892 5633 307 307 4.45% 5.45%

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 14 239 4837136 45272.89 539 530 106.8
A 14 238 249831 2333.57 539 530 106.8
A 13 6 10116 89.73 539 530 106.8
B 6 159 1746833 13320.73 710 693 131.1
B 5 172 772649 5889.0 710 693 131.1
B 6 203 215246 1636.75 710 693 131.1
C 0 10 1812037 13087.98 605 609 138.4
C 3 233 1602832 11576.43 605 609 138.4
C 14 238 169659 1221.42 605 609 138.4
D 8 195 2255375 13340.96 714 696 169.0
D 12 6 377730 2230.91 714 696 169.0
D 12 3 366659 2165.41 714 696 169.0

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