ASTROSAT CZTI

Data Quality Report

Orbit 04828

Creation date: 2024-06-27T14:47:35.929664
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_253T02_9000000614_04828cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04828cztM0_level2_quad_clean.evt
Size (bytes)765,889,920113,889,600
Size730.4 MB 108.6 MB
Events in quadrant A4,854,139695,497
Events in quadrant B6,521,938682,187
Events in quadrant C5,828,480701,308
Events in quadrant D5,315,043678,334

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213083
B0257802
C0244322
D0228692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99752012.015038%
B99754294.300752%
C99753643.649123%
D99752742.746867%

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 11365 9975 21 21 0.18% 0.21%
B 11365 9975 237 237 2.09% 2.38%
C 11365 9975 171 171 1.50% 1.71%
D 11365 9975 117 117 1.03% 1.17%

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 0 149 149995 624.9 1154 1126 238.2
A 8 15 96411 399.97 1154 1126 238.2
A 13 251 82726 342.53 1154 1126 238.2
B 14 167 1127468 4961.81 1160 1130 227.0
B 15 204 366891 1611.27 1160 1130 227.0
B 10 16 320494 1406.88 1160 1130 227.0
C 9 247 850111 3253.54 1117 1123 260.9
C 8 208 587911 2248.73 1117 1123 260.9
C 12 4 25809 94.6 1117 1123 260.9
D 13 235 386873 1423.0 1118 1085 271.1
D 2 136 165682 607.13 1118 1085 271.1
D 12 22 131086 479.52 1118 1085 271.1

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