ASTROSAT CZTI

Data Quality Report

Orbit 21664

Creation date: 2024-06-27T18:30:49.621689
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/AS1A06_002T02_9000003206_21664cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21664cztM0_level2_quad_clean.evt
Size (bytes)541,249,92094,991,040
Size516.2 MB 90.6 MB
Events in quadrant A3,096,880618,788
Events in quadrant B3,754,807627,890
Events in quadrant C3,154,765607,313
Events in quadrant D5,939,396564,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136412
B0155102
C0136732
D0221502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6575330.501901%
B65751322.007605%
C6575761.155894%
D65755117.771863%

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 7655 6576 0 0 0.00% 0.00%
B 7655 6576 67 67 0.88% 1.02%
C 7655 6576 0 0 0.00% 0.00%
D 7655 6576 452 452 5.90% 6.87%

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 15 236 13699 80.94 799 783 159.6
A 13 254 9302 53.38 799 783 159.6
A 0 226 6800 37.7 799 783 159.6
B 3 64 501819 3308.62 797 777 151.4
B 0 230 50480 328.21 797 777 151.4
B 0 229 24098 154.0 797 777 151.4
C 14 238 121821 661.61 777 780 182.9
C 13 61 5530 25.96 777 780 182.9
C 10 22 5085 23.53 777 780 182.9
D 7 223 1914973 10375.02 763 741 184.5
D 1 52 528670 2861.34 763 741 184.5
D 13 153 191047 1031.44 763 741 184.5

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