ASTROSAT CZTI

Data Quality Report

Orbit 09474

Creation date: 2024-06-27T15:46:35.896328
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/AS1A03_051T01_9000001346_09474cztM0_level2.evt modeM0/AS1A03_051T01_9000001346_09474cztM0_level2_quad_clean.evt
Size (bytes)567,411,84099,063,360
Size541.1 MB 94.5 MB
Events in quadrant A4,676,162568,644
Events in quadrant B3,943,202624,253
Events in quadrant C3,828,076631,125
Events in quadrant D4,164,812594,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580926847
B03761320166
C03755319962
D04387625879

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238
B0235
C0234
D0237

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372185
B0375192
C0375205
D0375178

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7804801.025115%
B8527790.926469%
C8633480.556006%
D8161690.845485%

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 20747 11139 2 2 0.01% 0.02%
B 20746 11899 0 0 0.00% 0.00%
C 20740 12033 0 0 0.00% 0.00%
D 20730 11407 6 6 0.03% 0.05%

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 8 5 1061508 5695.96 907 885 186.2
A 1 162 68552 363.4 907 885 186.2
A 1 178 23184 119.75 907 885 186.2
B 0 214 47975 245.94 995 971 191.1
B 12 111 21083 105.23 995 971 191.1
B 11 111 17306 85.47 995 971 191.1
C 5 128 17642 73.26 973 977 227.5
C 13 61 7322 27.89 973 977 227.5
C 12 4 4797 16.79 973 977 227.5
D 8 195 290289 1275.53 915 890 226.9
D 1 52 242186 1063.51 915 890 226.9
D 13 104 65698 285.64 915 890 226.9

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