ASTROSAT CZTI

Data Quality Report

Orbit 16727

Creation date: 2024-06-27T17:26:51.369561
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_059T07_9000002480_16727cztM0_level2.evt modeM0/AS1A05_059T07_9000002480_16727cztM0_level2_quad_clean.evt
Size (bytes)376,692,48087,307,200
Size359.2 MB 83.3 MB
Events in quadrant A3,568,603567,948
Events in quadrant B2,491,536592,704
Events in quadrant C2,373,427580,805
Events in quadrant D2,650,640568,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138991
B0105201
C0102071
D0110301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47653737.827912%
B47651122.350472%
C4765941.972718%
D4765651.364113%

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 5516 4767 197 197 3.57% 4.13%
B 5516 4767 22 22 0.40% 0.46%
C 5516 4767 3 3 0.05% 0.06%
D 5516 4767 8 8 0.15% 0.17%

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 15 174 1431695 12867.83 546 533 111.2
A 15 190 14265 123.47 546 533 111.2
A 3 1 13651 117.95 546 533 111.2
B 15 35 175089 1646.49 554 539 106.0
B 10 16 85422 800.68 554 539 106.0
B 0 197 20100 184.51 554 539 106.0
C 3 233 108189 856.89 539 540 125.6
C 14 238 82997 656.36 539 540 125.6
C 0 207 80965 640.19 539 540 125.6
D 1 52 341669 2549.65 548 531 133.8
D 2 16 99002 735.97 548 531 133.8
D 11 176 68199 505.75 548 531 133.8

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