ASTROSAT CZTI

Data Quality Report

Orbit 40150

Creation date: 2024-06-27T22:12:57.353086
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/AS1A12_068T02_9000005524_40150cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40150cztM0_level2_quad_clean.evt
Size (bytes)299,243,52036,725,760
Size285.4 MB 35.0 MB
Events in quadrant A1,407,025288,898
Events in quadrant B1,234,371296,674
Events in quadrant C5,485,708104,281
Events in quadrant D2,745,917235,083

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058192
B054431
C0180791
D0101061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2603100.384172%
B260380.307338%
C2603172166.116020%
D260331812.216673%

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 4066 2604 2 2 0.05% 0.08%
B 4066 2604 6 6 0.15% 0.23%
C 4066 2603 1746 1746 42.94% 67.08%
D 4066 2604 377 377 9.27% 14.48%

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 10 83 233819 3796.19 293 287 61.5
A 13 248 23672 380.14 293 287 61.5
A 9 143 7594 118.78 293 287 61.5
B 4 171 73851 1238.62 293 284 59.4
B 0 190 9174 149.68 293 284 59.4
B 12 111 7482 121.19 293 284 59.4
C 9 187 4686130 110634.74 174 174 42.4
C 15 214 67700 1594.28 174 174 42.4
C 9 203 23558 552.09 174 174 42.4
D 12 227 1413567 20863.72 271 263 67.7
D 1 52 166957 2460.8 271 263 67.7
D 13 249 33099 484.74 271 263 67.7

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