ASTROSAT CZTI

Data Quality Report

Orbit 38953

Creation date: 2024-06-27T21:58:34.168108
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_064T01_9000005416_38953cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38953cztM0_level2_quad_clean.evt
Size (bytes)355,708,80097,899,840
Size339.2 MB 93.4 MB
Events in quadrant A2,948,550674,072
Events in quadrant B2,700,272677,177
Events in quadrant C3,059,841650,741
Events in quadrant D4,054,170598,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119823
B0112802
C0122292
D0156442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5196330.635104%
B5196621.193226%
C5196651.250962%
D51971783.425053%

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 7169 5197 23 23 0.32% 0.44%
B 7169 5197 47 47 0.66% 0.90%
C 7169 5197 65 65 0.91% 1.25%
D 7170 5198 192 192 2.68% 3.69%

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 441748 3594.22 614 602 122.7
A 13 248 110253 893.38 614 602 122.7
A 9 143 14570 113.8 614 602 122.7
B 5 172 125063 1095.13 607 592 113.7
B 0 230 69875 609.57 607 592 113.7
B 15 85 57088 497.07 607 592 113.7
C 14 254 461543 3359.21 601 606 137.2
C 15 214 230870 1678.11 601 606 137.2
C 4 0 7276 48.61 601 606 137.2
D 12 235 689616 4771.73 599 584 144.4
D 2 250 388564 2686.86 599 584 144.4
D 12 6 159932 1103.53 599 584 144.4

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