ASTROSAT CZTI

Data Quality Report

Orbit 32853

Creation date: 2024-06-27T20:42:59.374693
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/AS1A11_088T02_9000004740_32853cztM0_level2.evt modeM0/AS1A11_088T02_9000004740_32853cztM0_level2_quad_clean.evt
Size (bytes)247,147,20013,818,240
Size235.7 MB 13.2 MB
Events in quadrant A1,031,20366,352
Events in quadrant B1,339,48766,111
Events in quadrant C1,261,18666,162
Events in quadrant D3,702,27160,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044451
B053821
C050811
D0125341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219620.091075%
B2196612.777778%
C2196964.371585%
D219668431.147541%

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 2196 2196 0 0 0.00% 0.00%
B 2196 2196 41 41 1.87% 1.87%
C 2196 2196 42 42 1.91% 1.91%
D 2196 2196 550 550 25.05% 25.05%

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 9 143 8254 144.34 264 259 55.4
A 13 254 4415 75.03 264 259 55.4
A 13 6 2840 46.6 264 259 55.4
B 5 172 174126 3374.79 261 254 51.5
B 0 219 51090 986.71 261 254 51.5
B 10 244 22292 427.75 261 254 51.5
C 0 10 185357 3098.55 250 252 59.7
C 3 233 64395 1073.72 250 252 59.7
C 7 247 10844 177.3 250 252 59.7
D 8 195 980091 16162.45 237 231 60.6
D 12 227 816791 13468.87 237 231 60.6
D 2 249 309870 5107.39 237 231 60.6

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