ASTROSAT CZTI

Data Quality Report

Orbit 41851

Creation date: 2024-06-27T22:33:36.690848
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/AS1C07_001T11_9000005710_41851cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41851cztM0_level2_quad_clean.evt
Size (bytes)140,538,24034,557,120
Size134.0 MB 33.0 MB
Events in quadrant A1,417,749230,546
Events in quadrant B887,478245,876
Events in quadrant C1,374,256223,247
Events in quadrant D1,379,425214,502

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053881
B037361
C053601
D052776

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18121025.629139%
B1812120.662252%
C18121347.395143%
D1811915.024848%

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 3875 1813 78 78 2.01% 4.30%
B 3875 1813 6 6 0.15% 0.33%
C 3875 1813 136 136 3.51% 7.50%
D 3874 1812 90 90 2.32% 4.97%

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 14 24 361521 8017.79 215 210 45.1
A 10 83 214407 4753.21 215 210 45.1
A 13 248 5245 111.73 215 210 45.1
B 5 255 31090 720.22 217 211 42.9
B 12 111 4950 110.53 217 211 42.9
B 11 111 4570 101.67 217 211 42.9
C 0 10 493154 10045.46 206 207 49.1
C 15 214 72322 1469.59 206 207 49.1
C 14 254 1989 36.31 206 207 49.1
D 2 249 245487 4660.12 211 205 52.6
D 12 79 182543 3464.24 211 205 52.6
D 12 6 81222 1539.24 211 205 52.6

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