ASTROSAT CZTI

Data Quality Report

Orbit 04849

Creation date: 2024-06-27T14:47:55.937297
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_002T01_9000000616_04849cztM0_level2.evt modeM0/AS1G05_002T01_9000000616_04849cztM0_level2_quad_clean.evt
Size (bytes)365,016,96066,913,920
Size348.1 MB 63.8 MB
Events in quadrant A2,620,450417,871
Events in quadrant B2,610,054416,108
Events in quadrant C2,596,154414,205
Events in quadrant D2,857,438397,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116192
B0114711
C0117061
D0124421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5435781.435143%
B5435540.993560%
C5435510.938362%
D54351071.968721%

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 6685 5436 15 15 0.22% 0.28%
B 6685 5436 1 1 0.01% 0.02%
C 6685 5436 18 18 0.27% 0.33%
D 6685 5436 63 63 0.94% 1.16%

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 50 177960 1390.29 629 617 127.6
A 8 15 9274 67.87 629 617 127.6
A 13 251 8390 60.94 629 617 127.6
B 14 167 74897 610.47 634 621 121.7
B 10 246 41483 335.84 634 621 121.7
B 4 80 16271 128.63 634 621 121.7
C 9 247 235013 1685.89 602 604 139.0
C 13 61 5062 32.06 602 604 139.0
C 14 67 4271 26.37 602 604 139.0
D 13 235 246485 1676.39 600 581 146.7
D 2 136 127392 864.5 600 581 146.7
D 2 234 54844 369.93 600 581 146.7

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