ASTROSAT CZTI

Data Quality Report

Orbit 30818

Creation date: 2024-06-27T20:19:58.836995
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/AS1C06_003T01_9000004452_30818cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30818cztM0_level2_quad_clean.evt
Size (bytes)594,794,88090,956,160
Size567.2 MB 86.7 MB
Events in quadrant A3,825,470601,193
Events in quadrant B5,183,385602,725
Events in quadrant C3,345,162573,767
Events in quadrant D5,246,487549,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149601
B0194531
C0135671
D0199231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61141943.173045%
B61152063.368765%
C6115991.618970%
D61152934.791496%

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 7449 6114 136 136 1.83% 2.22%
B 7450 6115 88 88 1.18% 1.44%
C 7450 6116 16 16 0.21% 0.26%
D 7450 6115 175 175 2.35% 2.86%

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 0 13 788879 5058.81 788 774 155.8
A 13 254 11078 66.14 788 774 155.8
A 3 137 7279 41.76 788 774 155.8
B 6 159 1745389 12092.67 779 761 144.3
B 5 172 204414 1411.6 779 761 144.3
B 4 80 64944 444.88 779 761 144.3
C 3 233 187056 1091.12 745 750 170.7
C 14 238 123092 716.51 745 750 170.7
C 0 10 92663 538.3 745 750 170.7
D 8 195 1825654 10548.2 739 725 173.0
D 12 218 326735 1884.36 739 725 173.0
D 10 1 90963 521.58 739 725 173.0

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