ASTROSAT CZTI

Data Quality Report

Orbit 37086

Creation date: 2024-06-27T21:35:23.381801
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/AS1A09_138T04_9000005282_37086cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37086cztM0_level2_quad_clean.evt
Size (bytes)468,509,76050,296,320
Size446.8 MB 48.0 MB
Events in quadrant A2,993,566301,065
Events in quadrant B3,092,996300,444
Events in quadrant C2,970,700285,805
Events in quadrant D4,776,210268,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119193
B0122182
C0117052
D0178062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243110.209804%
B5243581.106237%
C5243531.010872%
D52434228.048827%

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 7336 5244 4 4 0.05% 0.08%
B 7336 5244 38 38 0.52% 0.72%
C 7336 5244 43 43 0.59% 0.82%
D 7336 5244 383 383 5.22% 7.30%

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 267776 1925.33 693 682 138.7
A 7 3 21843 152.54 693 682 138.7
A 9 143 11151 75.47 693 682 138.7
B 5 184 207688 1615.1 679 664 128.2
B 5 255 96604 748.48 679 664 128.2
B 5 200 33536 256.45 679 664 128.2
C 15 214 224606 1505.51 650 657 148.8
C 0 10 102987 687.92 650 657 148.8
C 14 254 43169 285.79 650 657 148.8
D 1 47 427301 2741.72 646 628 155.6
D 2 153 282230 1809.52 646 628 155.6
D 12 17 250202 1603.71 646 628 155.6

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