ASTROSAT CZTI

Data Quality Report

Orbit 19737

Creation date: 2024-06-27T18:06:11.732509
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/AS1A05_013T01_9000002944_19737cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19737cztM0_level2_quad_clean.evt
Size (bytes)409,717,44067,262,400
Size390.7 MB 64.1 MB
Events in quadrant A2,645,307430,481
Events in quadrant B2,677,010433,843
Events in quadrant C2,577,433414,314
Events in quadrant D4,149,803388,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114771
B0113831
C0110771
D0158811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52662745.203190%
B52672494.727549%
C52672454.651604%
D526752710.005696%

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 5401 5266 41 41 0.76% 0.78%
B 5402 5267 7 7 0.13% 0.13%
C 5402 5267 0 0 0.00% 0.00%
D 5402 5267 298 298 5.52% 5.66%

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 0 254 188059 1428.21 632 616 131.2
A 9 143 21637 160.17 632 616 131.2
A 0 226 5553 37.62 632 616 131.2
B 4 216 101732 823.55 632 614 122.8
B 7 220 47213 379.52 632 614 122.8
B 0 197 15688 122.77 632 614 122.8
C 3 233 112929 785.25 606 608 143.0
C 14 238 93976 652.74 606 608 143.0
C 7 247 9615 62.97 606 608 143.0
D 1 52 1253303 8350.76 607 586 150.0
D 9 1 225000 1495.97 607 586 150.0
D 12 218 171495 1139.3 607 586 150.0

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