ASTROSAT CZTI

Data Quality Report

Orbit 31915

Creation date: 2024-06-27T20:34:08.582135
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/AS1A10_123T09_9000004654_31915cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31915cztM0_level2_quad_clean.evt
Size (bytes)1,134,558,720161,864,640
Size1.1 GB 154.4 MB
Events in quadrant A6,031,4141,081,313
Events in quadrant B9,561,7031,034,591
Events in quadrant C7,878,633997,910
Events in quadrant D10,082,977961,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305744974
B0455888577
C0395048131
D0482209864

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029647
B030157
C030248
D030361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356
B03910
C04517
D0388

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121131311.081483%
B118593222.715237%
C119144894.104415%
D118946375.355641%

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 19463 12489 3 3 0.02% 0.02%
B 19463 12207 22 22 0.11% 0.18%
C 19463 12268 84 84 0.43% 0.68%
D 19463 12240 562 562 2.89% 4.59%

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 12 96 26483 80.98 1549 1516 308.3
A 13 254 22863 69.24 1549 1516 308.3
A 15 174 17976 53.39 1549 1516 308.3
B 6 159 3178905 11257.16 1485 1448 282.3
B 4 80 137696 482.7 1485 1448 282.3
B 12 18 135618 475.34 1485 1448 282.3
C 3 233 1215914 3697.83 1414 1422 328.4
C 0 10 816886 2482.89 1414 1422 328.4
C 14 238 238025 720.4 1414 1422 328.4
D 12 33 2673564 7909.15 1437 1400 337.9
D 8 195 1578261 4667.24 1437 1400 337.9
D 13 249 88767 258.59 1437 1400 337.9

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