ASTROSAT CZTI

Data Quality Report

Orbit 05251

Creation date: 2024-06-27T14:53:08.542979
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/AS1G05_240T02_9000000670_05251cztM0_level2.evt modeM0/AS1G05_240T02_9000000670_05251cztM0_level2_quad_clean.evt
Size (bytes)312,995,52056,312,640
Size298.5 MB 53.7 MB
Events in quadrant A2,127,586356,263
Events in quadrant B2,050,674362,104
Events in quadrant C1,973,344352,147
Events in quadrant D3,033,632331,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089682
B089401
C088181
D0118721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4314390.904033%
B4314210.486787%
C4314130.301344%
D43142064.775151%

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 5474 4315 7 7 0.13% 0.16%
B 5474 4315 0 0 0.00% 0.00%
C 5474 4315 0 0 0.00% 0.00%
D 5474 4315 132 132 2.41% 3.06%

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 0 247 106532 1019.28 509 499 104.0
A 0 50 40150 381.16 509 499 104.0
A 0 226 13905 128.87 509 499 104.0
B 0 229 17753 175.34 516 504 98.4
B 4 239 15404 151.46 516 504 98.4
B 12 111 9222 88.62 516 504 98.4
C 1 16 7489 59.64 502 504 117.1
C 13 61 4067 30.42 502 504 117.1
C 7 159 3116 22.3 502 504 117.1
D 11 145 538355 4507.21 488 473 119.3
D 2 16 341642 2858.84 488 473 119.3
D 8 195 211476 1768.11 488 473 119.3

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