ASTROSAT CZTI

Data Quality Report

Orbit 39470

Creation date: 2024-06-27T22:04:58.399971
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_044T05_9000005480_39470cztM0_level2.fits modeM0/AS1A12_044T05_9000005480_39470cztM0_level2_quad_clean.evt
Size (bytes)1,229,863,680239,670,720
Size1.1 GB 228.6 MB
Events in quadrant A12,118,3821,600,935
Events in quadrant B7,284,7131,721,795
Events in quadrant C13,601,7091,488,154
Events in quadrant D11,331,7351,383,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0456965
B0320754
C0505284
D0443714

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153828525.538942%
B15382720.468080%
C15382157010.206735%
D1538212207.931348%

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 19711 15385 658 658 3.34% 4.28%
B 19711 15385 30 30 0.15% 0.19%
C 19711 15385 1208 1208 6.13% 7.85%
D 19711 15385 1043 1043 5.29% 6.78%

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 3938995 11579.46 1685 1653 340.0
A 10 83 1110655 3261.5 1685 1653 340.0
A 15 174 288436 843.41 1685 1653 340.0
B 5 255 307305 937.84 1698 1650 325.9
B 8 3 190719 580.12 1698 1650 325.9
B 12 111 42724 126.03 1698 1650 325.9
C 15 208 6596945 17633.21 1607 1615 374.0
C 15 214 620272 1654.03 1607 1615 374.0
C 9 187 93076 244.53 1607 1615 374.0
D 12 0 1961530 4991.38 1612 1566 392.7
D 13 249 1588528 4041.47 1612 1566 392.7
D 2 249 426803 1082.94 1612 1566 392.7

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