ASTROSAT CZTI

Data Quality Report

Orbit 33105

Creation date: 2024-06-27T20:44:54.416383
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/AS1A11_008T06_9000004762_33105cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33105cztM0_level2_quad_clean.evt
Size (bytes)667,146,24084,228,480
Size636.2 MB 80.3 MB
Events in quadrant A2,512,120613,985
Events in quadrant B3,478,273582,738
Events in quadrant C6,523,366501,190
Events in quadrant D7,357,203504,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102902
B0134791
C0227561
D0253141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494820.040420%
B49483056.164107%
C4948153731.063056%
D4948128125.889248%

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 7071 4949 0 0 0.00% 0.00%
B 7071 4949 193 193 2.73% 3.90%
C 7071 4949 1132 1132 16.01% 22.87%
D 7071 4949 1312 1312 18.55% 26.51%

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 47 18648 140.61 642 630 128.1
A 13 6 8741 63.3 642 630 128.1
A 13 254 8622 62.37 642 630 128.1
B 5 172 783450 6876.54 613 601 113.8
B 0 189 104642 913.9 613 601 113.8
B 0 245 68619 597.47 613 601 113.8
C 8 111 3182102 25816.46 543 551 123.2
C 1 23 424061 3436.54 543 551 123.2
C 7 221 248415 2011.27 543 551 123.2
D 7 223 3027696 20039.92 579 568 151.1
D 8 195 841020 5563.89 579 568 151.1
D 12 233 327371 2163.47 579 568 151.1

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