ASTROSAT CZTI

Data Quality Report

Orbit 36959

Creation date: 2024-06-27T21:33:36.604615
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/AS1C07_001T10_9000005252_36959cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36959cztM0_level2_quad_clean.evt
Size (bytes)398,566,08086,693,760
Size380.1 MB 82.7 MB
Events in quadrant A2,487,349571,760
Events in quadrant B2,904,694571,743
Events in quadrant C3,129,165564,439
Events in quadrant D3,190,317547,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109663
B0121752
C0127312
D0133622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5279120.227316%
B5279420.795605%
C52791242.348930%
D52791793.390794%

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 7102 5280 1 1 0.01% 0.02%
B 7102 5280 14 14 0.20% 0.27%
C 7102 5280 108 108 1.52% 2.05%
D 7102 5280 153 153 2.15% 2.90%

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 236882 2042.79 569 557 115.7
A 13 6 16133 134.64 569 557 115.7
A 13 248 10834 88.83 569 557 115.7
B 0 189 148983 1387.97 568 554 106.9
B 0 221 109369 1017.53 568 554 106.9
B 5 184 96767 899.69 568 554 106.9
C 1 23 281910 2200.86 551 555 127.8
C 0 10 239894 1872.19 551 555 127.8
C 15 214 224709 1753.41 551 555 127.8
D 12 17 471486 3490.7 550 534 134.9
D 2 250 148447 1096.33 550 534 134.9
D 2 153 130686 964.68 550 534 134.9

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