ASTROSAT CZTI

Data Quality Report

Orbit 38439

Creation date: 2024-06-27T21:52:46.237308
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_018T01_9000005386_38439cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38439cztM0_level2_quad_clean.evt
Size (bytes)374,238,72095,143,680
Size356.9 MB 90.7 MB
Events in quadrant A3,107,265638,745
Events in quadrant B3,707,510634,939
Events in quadrant C2,889,327629,078
Events in quadrant D3,698,509572,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129133
B0150162
C0121302
D0151172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5789300.518224%
B57892213.817585%
C5789130.224564%
D57892043.523925%

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 8445 5791 15 15 0.18% 0.26%
B 8445 5791 154 154 1.82% 2.66%
C 8445 5791 11 11 0.13% 0.19%
D 8445 5791 163 163 1.93% 2.81%

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 418134 3187.65 646 632 131.0
A 9 143 131481 999.04 646 632 131.0
A 13 248 25563 190.35 646 632 131.0
B 8 3 615589 5024.15 634 616 122.4
B 0 183 342787 2795.44 634 616 122.4
B 5 184 135056 1098.34 634 616 122.4
C 15 214 245238 1644.01 633 636 148.8
C 14 254 142200 951.48 633 636 148.8
C 0 10 15346 98.87 633 636 148.8
D 13 249 375547 2466.8 624 606 152.0
D 2 153 215219 1411.97 624 606 152.0
D 2 16 190788 1251.24 624 606 152.0

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