ASTROSAT CZTI

Data Quality Report

Orbit 00220

Creation date: 2024-06-27T13:58:05.523987
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/AS1P01_118T02_9000000022_00220cztM0_level2.evt modeM0/AS1P01_118T02_9000000022_00220cztM0_level2_quad_clean.evt
Size (bytes)835,755,84050,149,440
Size797.0 MB 47.8 MB
Events in quadrant A6,451,918288,410
Events in quadrant B6,150,024290,464
Events in quadrant C5,755,059286,346
Events in quadrant D6,596,977277,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229482
B0220811
C0208951
D0233941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536220.037300%
B536220.037300%
C536230.055949%
D5362410.764640%

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 7067 5363 140 140 1.98% 2.61%
B 7067 5363 57 57 0.81% 1.06%
C 7067 5363 40 40 0.57% 0.75%
D 7067 5363 260 260 3.68% 4.85%

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 5 244 400448 1173.61 1547 1534 339.9
A 0 253 21848 59.76 1547 1534 339.9
A 0 96 19327 52.35 1547 1534 339.9
B 5 46 139432 373.41 1570 1575 369.2
B 12 52 7115 15.01 1570 1575 369.2
B 5 2 7100 14.97 1570 1575 369.2
C 9 241 35521 83.61 1447 1500 406.9
C 0 1 14445 31.81 1447 1500 406.9
C 2 192 9207 18.94 1447 1500 406.9
D 1 4 1116538 2576.73 1375 1427 432.8
D 9 7 84347 191.61 1375 1427 432.8
D 2 63 37978 84.46 1375 1427 432.8

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