ASTROSAT CZTI

Data Quality Report

Orbit 35470

Creation date: 2022-04-21T02:45:58.426488
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/AS1T04_095T01_9000005080_35470cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35470cztM0_level2_quad_clean.evt
Size (bytes)87,315,84021,090,240
Size83.3 MB 20.1 MB
Events in quadrant A565,534138,018
Events in quadrant B620,473141,511
Events in quadrant C685,727138,353
Events in quadrant D691,295132,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023962
B025771
C027101
D027791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114720.174368%
B114780.697472%
C1147403.487358%
D1147131.133391%

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 2429 1148 0 0 0.00% 0.00%
B 2429 1148 4 4 0.16% 0.35%
C 2429 1148 31 31 1.28% 2.70%
D 2429 1148 8 8 0.33% 0.70%

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 10 83 48781 1673.69 132 129 29.1
A 13 6 2690 88.1 132 129 29.1
A 10 67 1626 51.5 132 129 29.1
B 5 236 45523 1678.84 129 126 27.0
B 5 172 35290 1300.41 129 126 27.0
B 15 85 14200 520.48 129 126 27.0
C 0 10 121905 3918.66 126 127 31.1
C 15 214 50242 1612.64 126 127 31.1
C 0 207 16458 525.51 126 127 31.1
D 12 217 51074 1518.39 129 125 33.6
D 13 249 28927 858.36 129 125 33.6
D 8 195 27715 822.24 129 125 33.6

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