ASTROSAT CZTI

Data Quality Report

Orbit 30961

Creation date: 2024-06-27T20:21:40.020855
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/AS1A10_058T11_9000004474_30961cztM0_level2.evt modeM0/AS1A10_058T11_9000004474_30961cztM0_level2_quad_clean.evt
Size (bytes)642,752,640108,924,480
Size613.0 MB 103.9 MB
Events in quadrant A3,402,663728,772
Events in quadrant B5,406,143735,177
Events in quadrant C3,911,079716,916
Events in quadrant D6,328,837686,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140582
B0200162
C0156122
D0232382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6185250.404204%
B61861512.440996%
C61862614.219205%
D61862343.782735%

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 7545 6186 0 0 0.00% 0.00%
B 7546 6186 22 22 0.29% 0.36%
C 7546 6186 109 109 1.44% 1.76%
D 7546 6187 80 80 1.06% 1.29%

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 11 47 38631 218.91 872 857 172.6
A 13 254 10902 58.21 872 857 172.6
A 3 137 7745 39.92 872 857 172.6
B 6 159 1816008 11165.07 871 851 162.6
B 4 80 53417 323.33 871 851 162.6
B 0 190 38716 232.91 871 851 162.6
C 0 10 395022 2022.99 844 854 194.8
C 14 238 138673 707.33 844 854 194.8
C 3 233 63306 320.52 844 854 194.8
D 13 174 2623910 13141.08 850 830 199.6
D 8 195 319584 1596.89 850 830 199.6
D 2 250 149017 742.39 850 830 199.6

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