ASTROSAT CZTI

Data Quality Report

Orbit 16872

Creation date: 2024-06-27T17:28:46.004282
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_101T05_9000002502_16872cztM0_level2.evt modeM0/AS1A05_101T05_9000002502_16872cztM0_level2_quad_clean.evt
Size (bytes)662,063,04090,757,440
Size631.4 MB 86.6 MB
Events in quadrant A2,883,373641,226
Events in quadrant B3,102,983651,709
Events in quadrant C2,999,237628,579
Events in quadrant D10,640,257388,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127782
B0131981
C0128941
D0359301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6271470.749482%
B6271580.924892%
C6271610.972732%
D6271309049.274438%

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 7242 6273 2 2 0.03% 0.03%
B 7242 6273 2 2 0.03% 0.03%
C 7242 6273 0 0 0.00% 0.00%
D 7241 6271 2327 2327 32.14% 37.11%

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 9 143 33524 220.42 739 724 148.8
A 15 174 6735 40.39 739 724 148.8
A 0 226 6650 39.82 739 724 148.8
B 10 16 54215 382.73 743 724 139.8
B 15 35 33477 234.35 743 724 139.8
B 0 189 29492 205.84 743 724 139.8
C 14 238 110131 651.88 718 722 167.8
C 15 127 62850 370.17 718 722 167.8
C 3 233 23142 133.58 718 722 167.8
D 1 52 8581561 67367.88 527 513 127.4
D 10 70 39254 304.15 527 513 127.4
D 2 234 20192 154.5 527 513 127.4

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