ASTROSAT CZTI

Data Quality Report

Orbit 34819

Creation date: 2022-03-07T18:44:35.643092
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/AS1C07_005T01_9000004992_34819cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34819cztM0_level2_quad_clean.evt
Size (bytes)572,990,400102,764,160
Size546.4 MB 98.0 MB
Events in quadrant A2,889,814693,026
Events in quadrant B6,579,164655,167
Events in quadrant C3,132,477693,231
Events in quadrant D4,347,575653,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123983
B0236292
C0128612
D0169992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5968100.167560%
B596885714.359920%
C5968500.837802%
D59682013.367962%

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 7282 5969 0 0 0.00% 0.00%
B 7282 5969 660 660 9.06% 11.06%
C 7282 5969 30 30 0.41% 0.50%
D 7282 5969 203 203 2.79% 3.40%

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 15 169 149041 1070.68 684 669 138.6
A 10 83 54717 390.02 684 669 138.6
A 15 223 24714 173.51 684 669 138.6
B 4 251 3691375 29519.21 655 638 125.0
B 5 172 101466 806.44 655 638 125.0
B 10 245 81319 645.3 655 638 125.0
C 15 214 276105 1791.86 661 663 153.7
C 0 10 133477 864.01 661 663 153.7
C 14 67 88217 569.57 661 663 153.7
D 8 195 766450 4765.97 658 638 160.7
D 12 233 363470 2258.06 658 638 160.7
D 14 52 165535 1026.22 658 638 160.7

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