ASTROSAT CZTI

Data Quality Report

Orbit 12506

Creation date: 2024-06-27T16:28:23.107698
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/AS1T01_218T01_9000001852_12506cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12506cztM0_level2_quad_clean.evt
Size (bytes)464,382,72097,053,120
Size442.9 MB 92.6 MB
Events in quadrant A3,428,930625,039
Events in quadrant B3,592,168646,839
Events in quadrant C3,108,157623,888
Events in quadrant D3,490,155587,324

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143033
B0148742
C0136602
D0149372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6538420.642398%
B65381301.988376%
C6538270.412970%
D6538901.376568%

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 7889 6540 1 1 0.01% 0.02%
B 7889 6540 50 50 0.63% 0.76%
C 7889 6540 9 9 0.11% 0.14%
D 7889 6540 71 71 0.90% 1.09%

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 1 162 107117 650.34 808 792 163.5
A 1 178 62138 375.23 808 792 163.5
A 1 161 52526 316.43 808 792 163.5
B 4 239 326898 2133.12 810 792 152.9
B 0 214 46296 297.65 810 792 152.9
B 12 111 16718 104.17 810 792 152.9
C 14 234 55754 306.57 782 786 179.3
C 13 61 5892 28.48 782 786 179.3
C 14 67 3537 15.34 782 786 179.3
D 1 52 417730 2280.02 769 749 182.9
D 13 104 65747 355.4 769 749 182.9
D 8 195 23626 125.09 769 749 182.9

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