ASTROSAT CZTI

Data Quality Report

Orbit 16940

Creation date: 2024-06-27T17:29:47.645199
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/AS1A05_182T03_9000002516_16940cztM0_level2.evt modeM0/AS1A05_182T03_9000002516_16940cztM0_level2_quad_clean.evt
Size (bytes)202,613,76048,850,560
Size193.2 MB 46.6 MB
Events in quadrant A1,706,887327,691
Events in quadrant B1,430,470331,688
Events in quadrant C1,466,496312,925
Events in quadrant D1,345,532312,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069140
B060490
C061290
D057810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271990.331004%
B2720281.029412%
C2720170.625000%
D272070.257353%

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 2720 2720 5 5 0.18% 0.18%
B 2721 2721 14 14 0.51% 0.51%
C 2721 2721 0 0 0.00% 0.00%
D 2721 2721 5 5 0.18% 0.18%

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 15 174 503392 7848.72 310 303 64.1
A 13 210 8590 129.29 310 303 64.1
A 0 226 2817 39.22 310 303 64.1
B 10 16 114265 1890.69 305 297 60.3
B 15 35 32831 539.73 305 297 60.3
B 0 197 28513 468.09 305 297 60.3
C 3 233 273340 3900.45 294 295 70.0
C 14 238 45579 646.88 294 295 70.0
C 13 61 2138 26.33 294 295 70.0
D 1 52 136955 1832.1 303 294 74.6
D 2 152 18508 244.18 303 294 74.6
D 4 239 11715 153.11 303 294 74.6

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