ASTROSAT CZTI

Data Quality Report

Orbit 32845

Creation date: 2024-06-27T20:43:00.209116
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/AS1C06_010T05_9000004736_32845cztM0_level2.evt modeM0/AS1C06_010T05_9000004736_32845cztM0_level2_quad_clean.evt
Size (bytes)377,326,08069,246,720
Size359.8 MB 66.0 MB
Events in quadrant A1,639,516481,725
Events in quadrant B2,702,700477,746
Events in quadrant C2,998,944467,527
Events in quadrant D3,848,420421,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070632
B0103231
C0112851
D0138281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A348950.143308%
B34892948.426483%
C34891444.127257%
D348952114.932645%

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 5642 3490 2 2 0.04% 0.06%
B 5642 3490 204 204 3.62% 5.85%
C 5642 3490 103 103 1.83% 2.95%
D 5642 3490 380 380 6.74% 10.89%

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 7 16 12250 141.85 418 411 83.5
A 13 254 7310 82.66 418 411 83.5
A 9 143 4805 52.65 418 411 83.5
B 5 172 826344 10763.35 406 398 76.7
B 12 1 56103 725.92 406 398 76.7
B 0 219 38637 498.31 406 398 76.7
C 9 160 1186703 13090.06 395 398 90.6
C 3 233 163658 1801.46 395 398 90.6
C 0 10 40793 445.73 395 398 90.6
D 2 250 770551 8138.16 377 368 94.6
D 8 195 678183 7162.15 377 368 94.6
D 12 6 346004 3652.17 377 368 94.6

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