ASTROSAT CZTI

Data Quality Report

Orbit 34629

Creation date: 2022-02-23T11:42:30.643426
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/AS1T05_008T01_9000004956_34629cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34629cztM0_level2_quad_clean.evt
Size (bytes)497,684,16076,233,600
Size474.6 MB 72.7 MB
Events in quadrant A2,638,558490,900
Events in quadrant B4,019,225466,366
Events in quadrant C3,085,838489,545
Events in quadrant D4,943,829464,391

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115953
B0155442
C0124482
D0187712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568350.087982%
B56834477.865564%
C5683741.302129%
D56831272.234735%

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 7147 5684 0 0 0.00% 0.00%
B 7147 5684 279 279 3.90% 4.91%
C 7147 5684 47 47 0.66% 0.83%
D 7147 5684 94 94 1.32% 1.65%

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 48679 359.98 662 650 133.4
A 13 6 12099 85.81 662 650 133.4
A 13 254 11189 78.99 662 650 133.4
B 5 172 1157248 9297.66 639 622 124.4
B 4 171 159227 1274.96 639 622 124.4
B 0 189 79494 634.02 639 622 124.4
C 15 214 238242 1594.39 639 643 149.0
C 0 10 205435 1374.24 639 643 149.0
C 14 67 126449 844.21 639 643 149.0
D 8 195 1807347 10360.68 634 620 174.4
D 7 223 170106 971.92 634 620 174.4
D 10 118 119661 682.64 634 620 174.4

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