ASTROSAT CZTI

Data Quality Report

Orbit 04487

Creation date: 2024-06-27T14:42:46.593400
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_253T03_9000000562_04487cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04487cztM0_level2_quad_clean.evt
Size (bytes)468,705,60056,937,600
Size447.0 MB 54.3 MB
Events in quadrant A3,451,032318,960
Events in quadrant B3,270,104324,856
Events in quadrant C3,266,252323,744
Events in quadrant D3,766,059302,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143833
B0136582
C0138402
D0155222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64901141.756549%
B6490791.217257%
C6490711.093991%
D64912043.142813%

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 7765 6490 52 52 0.67% 0.80%
B 7765 6490 5 5 0.06% 0.08%
C 7765 6490 21 21 0.27% 0.32%
D 7766 6490 111 111 1.43% 1.71%

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 13 379761 2334.09 795 778 162.4
A 0 226 8015 44.57 795 778 162.4
A 12 194 7983 44.37 795 778 162.4
B 4 48 52477 336.14 814 796 153.7
B 15 204 51237 328.08 814 796 153.7
B 12 111 13302 81.34 814 796 153.7
C 9 54 109583 597.36 786 790 182.1
C 14 48 60402 327.31 786 790 182.1
C 9 16 17859 93.72 786 790 182.1
D 13 235 288361 1568.06 765 744 183.4
D 12 233 175561 953.08 765 744 183.4
D 14 34 151502 821.92 765 744 183.4

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