ASTROSAT CZTI

Data Quality Report

Orbit 35267

Creation date: 2022-04-07T01:17:03.118278
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_082T01_9000005056_35267cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35267cztM0_level2_quad_clean.evt
Size (bytes)290,681,28039,784,320
Size277.2 MB 37.9 MB
Events in quadrant A1,288,144268,042
Events in quadrant B2,917,250242,500
Events in quadrant C1,660,847262,036
Events in quadrant D2,758,682244,451

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053762
B0103941
C064511
D099581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261130.114899%
B261156321.562620%
C2611632.412869%
D261137514.362313%

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 3925 2612 1 1 0.03% 0.04%
B 3925 2612 409 409 10.42% 15.66%
C 3925 2612 50 50 1.27% 1.91%
D 3925 2612 307 307 7.82% 11.75%

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 50488 768.12 317 309 65.3
A 13 254 4933 70.78 317 309 65.3
A 15 223 3465 48.31 317 309 65.3
B 5 236 1541930 27188.49 288 280 56.7
B 5 172 207155 3648.44 288 280 56.7
B 4 232 13616 235.19 288 280 56.7
C 0 10 272331 3770.69 305 306 72.1
C 15 214 108721 1502.8 305 306 72.1
C 15 208 40256 553.77 305 306 72.1
D 12 227 847542 11578.02 293 283 73.2
D 10 118 433279 5917.0 293 283 73.2
D 8 195 106308 1448.86 293 283 73.2

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