ASTROSAT CZTI

Data Quality Report

Orbit 13816

Creation date: 2024-06-27T16:46:27.709360
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/AS1A04_199T01_9000002040_13816cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13816cztM0_level2_quad_clean.evt
Size (bytes)1,036,630,080166,043,520
Size988.6 MB 158.4 MB
Events in quadrant A6,112,5771,054,066
Events in quadrant B6,341,2541,064,314
Events in quadrant C6,204,9171,046,136
Events in quadrant D11,856,548964,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268294
B0274223
C0269113
D0443383

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130212151.651179%
B130212431.866216%
C130211591.221104%
D130219086.973351%

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 14177 13022 0 0 0.00% 0.00%
B 14177 13022 16 16 0.11% 0.12%
C 14177 13023 6 6 0.04% 0.05%
D 14177 13022 532 532 3.75% 4.09%

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 1 162 36422 109.14 1562 1523 319.8
A 8 15 29838 88.55 1562 1523 319.8
A 0 226 14643 41.03 1562 1523 319.8
B 10 252 97812 321.19 1559 1517 299.8
B 0 219 61120 198.81 1559 1517 299.8
B 4 173 45613 147.08 1559 1517 299.8
C 3 233 223744 624.73 1522 1524 355.7
C 6 253 19508 50.56 1522 1524 355.7
C 0 207 11523 28.11 1522 1524 355.7
D 1 52 2414834 6676.85 1487 1441 361.5
D 13 122 982901 2715.29 1487 1441 361.5
D 12 110 955744 2640.16 1487 1441 361.5

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