ASTROSAT CZTI

Data Quality Report

Orbit 23719

Creation date: 2024-06-27T18:57:54.396242
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/AS1A07_027T05_9000003506_23719cztM0_level2.evt modeM0/AS1A07_027T05_9000003506_23719cztM0_level2_quad_clean.evt
Size (bytes)509,587,20083,283,840
Size486.0 MB 79.4 MB
Events in quadrant A2,996,771540,000
Events in quadrant B4,118,627538,617
Events in quadrant C3,094,669523,618
Events in quadrant D4,793,517478,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130672
B0164071
C0132111
D0184831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6326450.711350%
B63272473.903904%
C6327891.406670%
D63275388.503240%

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 7326 6326 0 0 0.00% 0.00%
B 7327 6327 147 147 2.01% 2.32%
C 7327 6327 1 1 0.01% 0.02%
D 7327 6327 454 454 6.20% 7.18%

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 13 254 11724 69.42 777 760 157.9
A 0 226 6674 37.44 777 760 157.9
A 3 137 6660 37.35 777 760 157.9
B 3 64 673686 4584.9 767 746 146.8
B 0 229 162845 1104.42 767 746 146.8
B 0 189 162332 1100.92 767 746 146.8
C 14 238 118649 671.2 742 746 175.7
C 7 247 59598 335.03 742 746 175.7
C 10 91 21082 115.77 742 746 175.7
D 1 52 1396397 7767.93 728 706 179.7
D 7 238 405348 2252.1 728 706 179.7
D 12 233 98181 542.51 728 706 179.7

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