ASTROSAT CZTI

Data Quality Report

Orbit 12528

Creation date: 2024-06-27T16:28:41.456146
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_230T01_9000001854_12528cztM0_level2.evt modeM0/AS1A04_230T01_9000001854_12528cztM0_level2_quad_clean.evt
Size (bytes)950,201,280145,638,720
Size906.2 MB 138.9 MB
Events in quadrant A6,413,288913,746
Events in quadrant B6,175,956923,984
Events in quadrant C5,565,383904,695
Events in quadrant D9,787,244814,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265203
B0261952
C0250432
D0374422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123431431.158551%
B123431591.288180%
C123431090.883092%
D1234310638.612169%

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 13614 12345 0 0 0.00% 0.00%
B 13614 12344 15 15 0.11% 0.12%
C 13614 12345 4 4 0.03% 0.03%
D 13614 12344 930 930 6.83% 7.53%

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 203093 674.92 1467 1437 298.8
A 8 15 137666 455.95 1467 1437 298.8
A 1 178 125712 415.94 1467 1437 298.8
B 4 239 290348 1033.41 1463 1427 279.6
B 0 214 56903 198.43 1463 1427 279.6
B 11 51 45043 156.01 1463 1427 279.6
C 15 208 25880 73.94 1420 1426 330.7
C 13 61 10235 26.64 1420 1426 330.7
C 3 202 3562 6.46 1420 1426 330.7
D 1 52 3870644 11644.62 1370 1331 332.3
D 14 34 175228 523.34 1370 1331 332.3
D 8 195 158580 473.24 1370 1331 332.3

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