ASTROSAT CZTI

Data Quality Report

Orbit 07181

Creation date: 2024-06-27T15:16:45.609978
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/AS1A02_176T01_9000000980_07181cztM0_level2.evt modeM0/AS1A02_176T01_9000000980_07181cztM0_level2_quad_clean.evt
Size (bytes)492,364,800118,808,640
Size469.6 MB 113.3 MB
Events in quadrant A3,317,542786,143
Events in quadrant B3,160,700821,603
Events in quadrant C2,876,738800,251
Events in quadrant D5,113,439735,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142613
B0136762
C0131782
D0195752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65152914.466616%
B6515560.859555%
C6515360.552571%
D65153775.786646%

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 7475 6516 7 7 0.09% 0.11%
B 7475 6517 15 15 0.20% 0.23%
C 7475 6517 0 0 0.00% 0.00%
D 7475 6517 272 272 3.64% 4.17%

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 14 111 429656 2902.75 735 721 147.8
A 8 15 38749 257.35 735 721 147.8
A 13 14 10465 65.94 735 721 147.8
B 4 81 112758 792.62 754 737 141.3
B 0 214 89768 629.95 754 737 141.3
B 0 219 21107 144.13 754 737 141.3
C 13 61 5718 29.37 733 736 169.6
C 8 128 5309 26.96 733 736 169.6
C 10 22 4977 25.0 733 736 169.6
D 2 216 1319490 7568.7 715 693 174.2
D 8 195 770743 4419.39 715 693 174.2
D 13 137 139831 798.53 715 693 174.2

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