ASTROSAT CZTI

Data Quality Report

Orbit 16311

Creation date: 2024-06-27T17:20:50.306879
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/AS1A05_034T01_9000002404_16311cztM0_level2.evt modeM0/AS1A05_034T01_9000002404_16311cztM0_level2_quad_clean.evt
Size (bytes)460,549,44074,485,440
Size439.2 MB 71.0 MB
Events in quadrant A3,286,692450,150
Events in quadrant B3,552,279467,511
Events in quadrant C3,349,907453,078
Events in quadrant D3,329,540443,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135163
B0143102
C0136092
D0137412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316520.823306%
B6316811.282457%
C6316851.345788%
D6316691.092464%

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 7612 6318 2 2 0.03% 0.03%
B 7612 6318 21 21 0.28% 0.33%
C 7612 6318 0 0 0.00% 0.00%
D 7612 6318 27 27 0.35% 0.43%

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 15 174 61309 364.5 834 818 166.0
A 15 157 19839 114.61 834 818 166.0
A 0 226 7279 38.93 834 818 166.0
B 4 173 112053 715.88 843 827 155.4
B 15 35 68419 435.04 843 827 155.4
B 0 198 22334 138.42 843 827 155.4
C 14 238 129979 689.58 818 826 187.3
C 3 233 24605 126.96 818 826 187.3
C 13 61 5894 27.06 818 826 187.3
D 10 70 105583 533.72 816 799 196.3
D 2 122 74740 376.62 816 799 196.3
D 1 52 40462 202.02 816 799 196.3

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