ASTROSAT CZTI

Data Quality Report

Orbit 04374

Creation date: 2024-06-27T14:41:05.412786
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/AS1G05_252T01_9000000544_04374cztM0_level2.evt modeM0/AS1G05_252T01_9000000544_04374cztM0_level2_quad_clean.evt
Size (bytes)541,840,32078,747,840
Size516.7 MB 75.1 MB
Events in quadrant A5,694,362476,153
Events in quadrant B3,204,722495,131
Events in quadrant C3,445,679475,691
Events in quadrant D3,610,806470,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214852
B0139271
C0148761
D0153891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66925778.622236%
B6692650.971309%
C66921071.598924%
D66921011.509265%

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 7337 6693 389 389 5.30% 5.81%
B 7336 6691 1 1 0.01% 0.01%
C 7336 6691 25 25 0.34% 0.37%
D 7337 6692 37 37 0.50% 0.55%

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 13 251 2630802 16370.0 781 764 160.7
A 13 248 28244 171.04 781 764 160.7
A 13 14 12342 72.06 781 764 160.7
B 4 48 52715 333.62 801 783 155.7
B 0 183 17374 106.58 801 783 155.7
B 8 3 14826 90.21 801 783 155.7
C 14 48 354568 1965.45 763 766 180.0
C 9 247 68780 377.83 763 766 180.0
C 12 4 18808 100.23 763 766 180.0
D 2 63 272776 1454.51 768 745 187.0
D 4 95 141554 752.89 768 745 187.0
D 2 136 115661 614.44 768 745 187.0

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