ASTROSAT CZTI

Data Quality Report

Orbit 38893

Creation date: 2024-06-27T21:57:49.951851
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/AS1T05_064T01_9000005416_38893cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38893cztM0_level2_quad_clean.evt
Size (bytes)136,460,16036,843,840
Size130.1 MB 35.1 MB
Events in quadrant A1,170,252248,577
Events in quadrant B1,066,971250,765
Events in quadrant C1,035,869242,897
Events in quadrant D1,614,999223,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047742
B044641
C042661
D062491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2067120.580552%
B2067321.548137%
C206730.145138%
D2067522.515723%

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 3800 2068 2 2 0.05% 0.10%
B 3800 2068 21 21 0.55% 1.02%
C 3800 2068 1 1 0.03% 0.05%
D 3800 2068 42 42 1.11% 2.03%

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 189246 3725.71 244 239 50.7
A 13 248 12689 245.41 244 239 50.7
A 15 174 10042 193.23 244 239 50.7
B 5 184 66774 1391.22 241 234 47.8
B 5 172 26082 540.43 241 234 47.8
B 0 155 8312 168.9 241 234 47.8
C 15 214 86906 1560.94 237 238 55.5
C 0 10 6046 104.61 237 238 55.5
C 1 16 5506 94.88 237 238 55.5
D 12 227 325681 5476.14 235 227 59.4
D 2 249 70691 1185.64 235 227 59.4
D 14 52 58429 979.32 235 227 59.4

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