ASTROSAT CZTI

Data Quality Report

Orbit 18484

Creation date: 2024-06-27T17:50:26.075881
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/AS1A05_075T09_9000002740_18484cztM0_level2.evt modeM0/AS1A05_075T09_9000002740_18484cztM0_level2_quad_clean.evt
Size (bytes)466,102,080109,679,040
Size444.5 MB 104.6 MB
Events in quadrant A3,227,023718,656
Events in quadrant B3,588,670750,509
Events in quadrant C3,748,283722,606
Events in quadrant D3,131,865698,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135192
B0146992
C0151232
D0133022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6186380.614290%
B61861252.020692%
C61861262.036857%
D6186410.662787%

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 8921 6188 0 0 0.00% 0.00%
B 8921 6187 36 36 0.40% 0.58%
C 8921 6186 0 0 0.00% 0.00%
D 8921 6188 5 5 0.06% 0.08%

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 15 174 77051 470.58 810 795 162.0
A 4 2 20125 119.29 810 795 162.0
A 0 13 6979 38.16 810 795 162.0
B 10 245 338391 2201.74 821 803 153.3
B 12 111 17564 109.31 821 803 153.3
B 0 244 16712 103.76 821 803 153.3
C 3 233 533401 2926.14 792 799 182.0
C 14 238 124216 678.06 792 799 182.0
C 13 61 5469 25.66 792 799 182.0
D 7 238 39582 201.88 794 774 192.2
D 7 96 32037 162.63 794 774 192.2
D 2 234 28011 141.69 794 774 192.2

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