ASTROSAT CZTI

Data Quality Report

Orbit 20968

Creation date: 2024-06-27T18:21:53.343267
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/AS1T03_131T01_9000003090_20968cztM0_level2.evt modeM0/AS1T03_131T01_9000003090_20968cztM0_level2_quad_clean.evt
Size (bytes)503,582,40091,416,960
Size480.3 MB 87.2 MB
Events in quadrant A3,137,719587,890
Events in quadrant B3,987,501582,184
Events in quadrant C3,223,107576,877
Events in quadrant D4,446,824553,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137492
B0162042
C0138862
D0176592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6723180.267738%
B67232724.045813%
C6723380.565224%
D67221682.499256%

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 7638 6724 1 1 0.01% 0.01%
B 7638 6724 164 164 2.15% 2.44%
C 7638 6724 0 0 0.00% 0.00%
D 7637 6723 172 172 2.25% 2.56%

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 2 79 8583 46.97 812 793 165.8
A 0 226 6993 37.39 812 793 165.8
A 3 137 6591 34.96 812 793 165.8
B 7 220 638387 4118.03 801 781 154.8
B 0 189 98856 633.43 801 781 154.8
B 3 64 54900 349.53 801 781 154.8
C 14 238 119222 649.22 772 778 182.4
C 10 91 68394 370.62 772 778 182.4
C 8 128 10802 54.94 772 778 182.4
D 7 238 594294 3118.17 777 755 190.3
D 1 52 448901 2354.34 777 755 190.3
D 7 223 233717 1223.87 777 755 190.3

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