ASTROSAT CZTI

Data Quality Report

Orbit 44852

Creation date: 2024-06-27T23:07:13.754857
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/AS1A13_017T01_9000006028_44852cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44852cztM0_level2_quad_clean.evt
Size (bytes)453,651,840106,799,040
Size432.6 MB 101.9 MB
Events in quadrant A4,896,528713,444
Events in quadrant B3,275,838744,944
Events in quadrant C2,905,927715,106
Events in quadrant D5,237,797632,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196671
B0139771
C0129161
D0199581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61401953.175896%
B6141871.416707%
C6141530.863052%
D61403295.358306%

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 7320 6141 36 36 0.49% 0.59%
B 7321 6142 27 27 0.37% 0.44%
C 7321 6142 7 7 0.10% 0.11%
D 7320 6141 274 274 3.74% 4.46%

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 10 83 1936379 13098.56 710 695 147.8
A 13 248 199532 1345.51 710 695 147.8
A 3 137 8023 49.59 710 695 147.8
B 5 255 208009 1475.64 716 695 140.5
B 0 155 134686 953.73 716 695 140.5
B 0 190 28737 199.6 716 695 140.5
C 12 2 64488 387.07 713 718 164.8
C 14 254 31405 186.26 713 718 164.8
C 3 233 16192 93.92 713 718 164.8
D 13 174 1221314 7012.87 696 676 174.1
D 5 235 574229 3295.21 696 676 174.1
D 2 249 262613 1504.89 696 676 174.1

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