ASTROSAT CZTI

Data Quality Report

Orbit 14794

Creation date: 2024-06-27T16:59:46.000493
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/AS1A04_022T02_9000002184_14794cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14794cztM0_level2_quad_clean.evt
Size (bytes)491,086,08064,555,200
Size468.3 MB 61.6 MB
Events in quadrant A3,287,980390,598
Events in quadrant B3,445,038387,736
Events in quadrant C4,327,683363,549
Events in quadrant D3,386,593375,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135002
B0139861
C0175881
D0139901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62701332.121212%
B62701452.312600%
C62703044.848485%
D62701061.690590%

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 7461 6273 0 0 0.00% 0.00%
B 7461 6273 11 11 0.15% 0.18%
C 7461 6273 128 128 1.72% 2.04%
D 7461 6273 7 7 0.09% 0.11%

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 0 23 75048 450.04 818 802 165.0
A 12 189 56656 338.56 818 802 165.0
A 0 226 12400 70.3 818 802 165.0
B 0 228 62146 404.48 807 790 151.7
B 3 64 47769 309.7 807 790 151.7
B 0 229 43011 278.33 807 790 151.7
C 3 233 754012 4284.97 772 776 175.8
C 4 254 556773 3162.93 772 776 175.8
C 13 61 5604 27.47 772 776 175.8
D 15 0 303296 1434.85 790 772 210.8
D 2 120 32067 148.43 790 772 210.8
D 2 234 24360 111.88 790 772 210.8

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