ASTROSAT CZTI

Data Quality Report

Orbit 42074

Creation date: 2024-06-27T22:36:32.062131
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/AS1A12_037T03_9000005738_42074cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42074cztM0_level2_quad_clean.evt
Size (bytes)361,598,40097,678,080
Size344.8 MB 93.2 MB
Events in quadrant A4,075,315649,727
Events in quadrant B2,686,308669,820
Events in quadrant C2,793,430636,228
Events in quadrant D3,361,201580,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159842
B0122712
C0121142
D0141642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6024580.962815%
B6024200.332005%
C602440.066401%
D60241121.859230%

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 7308 6025 33 33 0.45% 0.55%
B 7308 6025 10 10 0.14% 0.17%
C 7308 6025 0 0 0.00% 0.00%
D 7308 6025 94 94 1.29% 1.56%

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 15 222 782590 5718.8 665 651 136.7
A 10 83 624041 4559.24 665 651 136.7
A 12 189 58601 423.82 665 651 136.7
B 5 255 55835 429.31 659 641 128.6
B 3 112 35859 273.93 659 641 128.6
B 12 111 16229 121.25 659 641 128.6
C 15 214 251514 1662.27 647 650 150.9
C 12 249 12182 76.41 647 650 150.9
C 3 233 5622 32.95 647 650 150.9
D 1 52 225380 1409.69 645 628 159.4
D 13 249 196541 1228.81 645 628 159.4
D 12 6 153114 956.42 645 628 159.4

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