ASTROSAT CZTI

Data Quality Report

Orbit 20211112_A11_046T06_9000004764_level2

Creation date: 2021-11-13T17:51:11.025849
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_046T06_9000004764cztM0_level2_bc.evt modeM0/AS1A11_046T06_9000004764cztM0_level2_quad_clean.evt
Size (bytes)1,232,830,080318,110,400
Size1.1 GB 303.4 MB
Events in quadrant A4,819,5192,153,018
Events in quadrant B7,252,8422,110,866
Events in quadrant C6,450,5862,049,589
Events in quadrant D17,351,1121,843,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440480
B0550620
C0497600
D0879800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21448220.102574%
B2144810294.797650%
C214482561.193584%
D21448326015.199552%

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 31582 21447 1 1 0.00% 0.00%
B 31582 21443 38 38 0.12% 0.18%
C 31582 21448 24 24 0.08% 0.11%
D 31582 21446 1524 1524 4.83% 7.11%

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 13 254 39371 141.42 1232 1216 269.8
A 13 6 29255 103.93 1232 1216 269.8
A 7 16 12911 43.35 1232 1216 269.8
B 5 172 1774431 7394.97 1214 1193 239.8
B 5 200 183795 761.51 1214 1193 239.8
B 0 189 137456 568.26 1214 1193 239.8
C 7 221 1013926 3876.65 1166 1161 261.2
C 0 10 592881 2264.98 1166 1161 261.2
C 1 241 48937 182.88 1166 1161 261.2
D 7 223 5938424 21548.12 1115 1089 275.5
D 8 195 2274687 8251.47 1115 1089 275.5
D 2 249 1248832 4528.38 1115 1089 275.5

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