ASTROSAT CZTI

Data Quality Report

Orbit 35245

Creation date: 2022-04-05T12:27:48.557393
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_004T01_9000005052_35245cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35245cztM0_level2_quad_clean.evt
Size (bytes)584,824,32061,367,040
Size557.7 MB 58.5 MB
Events in quadrant A2,728,851391,493
Events in quadrant B6,442,552346,621
Events in quadrant C3,038,149400,752
Events in quadrant D5,140,762344,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113213
B0227782
C0120902
D0190162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5332110.206302%
B5332127823.968492%
C5332891.669167%
D533259311.121530%

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 8889 5334 5 5 0.06% 0.09%
B 8889 5333 863 863 9.71% 16.18%
C 8889 5334 52 52 0.58% 0.97%
D 8889 5334 507 507 5.70% 9.51%

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 98617 741.43 662 651 132.1
A 9 143 47381 353.66 662 651 132.1
A 7 3 10853 77.21 662 651 132.1
B 5 236 3029616 26609.22 603 590 113.8
B 5 172 968563 8503.4 603 590 113.8
B 4 232 30648 264.05 603 590 113.8
C 0 10 276899 1868.68 641 647 147.8
C 15 214 227306 1533.21 641 647 147.8
C 15 208 22884 150.42 641 647 147.8
D 7 80 1191241 7949.6 620 604 149.8
D 8 195 718884 4795.78 620 604 149.8
D 1 47 252882 1684.4 620 604 149.8

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