ASTROSAT CZTI

Data Quality Report

Orbit 11139

Creation date: 2024-06-27T16:08:48.335288
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/AS1G08_071T02_9000001620_11139cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11139cztM0_level2_quad_clean.evt
Size (bytes)886,392,000130,466,880
Size845.3 MB 124.4 MB
Events in quadrant A8,967,154805,583
Events in quadrant B7,043,251818,445
Events in quadrant C4,227,865851,454
Events in quadrant D5,956,224808,085

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020711
B020913
C021214
D021317

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095
B040
C040
D062

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357152593
B0288401491
C0209311394
D0261821974

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95889559.960367%
B96357337.607680%
C9618410.426284%
D96134334.504317%

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 12283 9649 710 710 5.78% 7.36%
B 12314 9691 452 452 3.67% 4.66%
C 12283 9665 1 1 0.01% 0.01%
D 12313 9679 356 356 2.89% 3.68%

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 8 5 2534144 11545.42 1073 1047 219.4
A 14 238 1781099 8113.17 1073 1047 219.4
A 8 15 424464 1929.86 1073 1047 219.4
B 4 239 1636838 7811.86 1086 1059 209.4
B 10 16 638054 3042.05 1086 1059 209.4
B 10 244 229058 1088.84 1086 1059 209.4
C 5 128 12170 44.24 1077 1083 250.6
C 14 234 9945 35.36 1077 1083 250.6
C 13 61 7950 27.4 1077 1083 250.6
D 10 253 1192943 4671.1 1055 1024 255.2
D 2 14 193486 754.25 1055 1024 255.2
D 1 52 114703 445.51 1055 1024 255.2

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