ASTROSAT CZTI

Data Quality Report

Orbit 07278

Creation date: 2024-06-27T15:17:53.702678
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/AS1G06_154T03_9000000996_07278cztM0_level2.evt modeM0/AS1G06_154T03_9000000996_07278cztM0_level2_quad_clean.evt
Size (bytes)435,579,84091,877,760
Size415.4 MB 87.6 MB
Events in quadrant A3,045,568586,996
Events in quadrant B3,227,881605,704
Events in quadrant C3,195,461590,840
Events in quadrant D3,298,326563,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133383
B0138922
C0134012
D0141992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247240.384184%
B6247410.656315%
C6247100.160077%
D6247470.752361%

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 7477 6248 0 0 0.00% 0.00%
B 7477 6248 8 8 0.11% 0.13%
C 7477 6248 3 3 0.04% 0.05%
D 7477 6248 14 14 0.19% 0.22%

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 15 109847 698.22 762 746 156.3
A 0 226 7322 42.08 762 746 156.3
A 12 194 6881 39.26 762 746 156.3
B 0 214 87298 585.57 775 757 147.8
B 4 81 61460 410.74 775 757 147.8
B 0 228 22470 146.92 775 757 147.8
C 7 247 118864 678.99 748 753 174.0
C 14 67 118280 675.63 748 753 174.0
C 1 16 29536 165.47 748 753 174.0
D 2 216 280748 1545.13 739 718 181.2
D 2 14 73362 400.83 739 718 181.2
D 2 33 55975 304.89 739 718 181.2

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