ASTROSAT CZTI

Data Quality Report

Orbit 32961

Creation date: 2024-06-27T20:43:54.910661
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_001T01_9000004752_32961cztM0_level2.evt modeM0/AS1C07_001T01_9000004752_32961cztM0_level2_quad_clean.evt
Size (bytes)545,028,480104,762,880
Size519.8 MB 99.9 MB
Events in quadrant A2,416,117721,945
Events in quadrant B3,209,133733,351
Events in quadrant C2,566,846743,046
Events in quadrant D7,961,000608,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105593
B0129182
C0109832
D0272902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521250.095932%
B52121412.705295%
C5212460.882579%
D5212122023.407521%

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 7364 5212 4 4 0.05% 0.08%
B 7364 5213 105 105 1.43% 2.01%
C 7364 5213 28 28 0.38% 0.54%
D 7364 5212 1205 1205 16.36% 23.12%

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 0 254 24082 194.4 613 601 120.8
A 13 6 16467 131.35 613 601 120.8
A 13 254 9144 70.73 613 601 120.8
B 5 172 388841 3398.48 616 600 114.2
B 5 200 155661 1357.33 616 600 114.2
B 0 219 100072 870.73 616 600 114.2
C 0 10 135921 975.74 607 614 138.7
C 14 67 19943 139.39 607 614 138.7
C 1 241 19505 136.23 607 614 138.7
D 12 227 2313980 16281.2 544 529 142.1
D 8 195 1328176 9343.48 544 529 142.1
D 7 223 676762 4759.07 544 529 142.1

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