ASTROSAT CZTI

Data Quality Report

Orbit 09180

Creation date: 2024-06-27T15:42:22.753629
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/AS1C02_041T02_9000001282_09180cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09180cztM0_level2_quad_clean.evt
Size (bytes)539,144,64079,367,040
Size514.2 MB 75.7 MB
Events in quadrant A4,482,733472,799
Events in quadrant B3,732,437481,086
Events in quadrant C3,674,405469,854
Events in quadrant D3,932,133460,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180193
B0159702
C0160612
D0168592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74632753.684845%
B74632313.095270%
C74631932.586091%
D74632603.483854%

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 8643 7465 70 70 0.81% 0.94%
B 8643 7465 10 10 0.12% 0.13%
C 8643 7465 0 0 0.00% 0.00%
D 8643 7465 75 75 0.87% 1.00%

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 753045 4081.27 898 879 184.3
A 1 162 154891 835.67 898 879 184.3
A 1 161 35315 186.85 898 879 184.3
B 4 80 38463 214.35 906 881 175.3
B 10 252 29222 161.65 906 881 175.3
B 0 213 26780 147.72 906 881 175.3
C 9 68 239183 1155.24 880 883 206.3
C 13 61 6766 28.52 880 883 206.3
C 8 222 3927 14.76 880 883 206.3
D 1 52 398711 1700.1 871 851 234.0
D 7 71 61832 260.58 871 851 234.0
D 6 225 49068 206.04 871 851 234.0

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