ASTROSAT CZTI

Data Quality Report

Orbit 09278

Creation date: 2024-06-27T15:43:49.391660
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/AS1G07_077T01_9000001306_09278cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09278cztM0_level2_quad_clean.evt
Size (bytes)407,401,92083,983,680
Size388.5 MB 80.1 MB
Events in quadrant A3,590,878529,875
Events in quadrant B2,784,483554,561
Events in quadrant C2,636,351549,280
Events in quadrant D2,942,151514,835

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158581559
B0130511069
C0126351005
D0138641131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012612
B01254
C012610
D012610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5562771.384394%
B5641490.868640%
C5655310.548187%
D56531051.857421%

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 7461 6029 20 20 0.27% 0.33%
B 7461 6056 0 0 0.00% 0.00%
C 7461 6054 0 0 0.00% 0.00%
D 7461 6066 32 32 0.43% 0.53%

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 8 5 852969 6371.21 663 651 133.8
A 13 251 77466 574.2 663 651 133.8
A 15 174 39091 287.34 663 651 133.8
B 0 214 29549 225.07 688 671 128.3
B 8 234 28214 214.66 688 671 128.3
B 0 219 23263 176.07 688 671 128.3
C 14 67 7839 46.26 672 676 154.8
C 10 22 5310 29.93 672 676 154.8
C 13 61 4902 27.29 672 676 154.8
D 12 233 234047 1417.92 650 633 164.6
D 2 136 65532 394.24 650 633 164.6
D 2 152 57792 347.22 650 633 164.6

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