ASTROSAT CZTI

Data Quality Report

Orbit 15771

Creation date: 2024-06-27T17:13:39.458415
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/AS1G08_028T01_9000002334_15771cztM0_level2.evt modeM0/AS1G08_028T01_9000002334_15771cztM0_level2_quad_clean.evt
Size (bytes)234,950,40050,722,560
Size224.1 MB 48.4 MB
Events in quadrant A1,530,373329,566
Events in quadrant B1,670,639337,063
Events in quadrant C1,540,401322,124
Events in quadrant D2,142,903307,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067790
B070550
C067800
D086600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A337120.059330%
B3371110.326313%
C3371160.474637%
D33711534.538713%

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 3372 3372 0 0 0.00% 0.00%
B 3372 3372 2 2 0.06% 0.06%
C 3372 3372 0 0 0.00% 0.00%
D 3372 3372 142 142 4.21% 4.21%

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 15 239 12165 146.91 392 383 80.2
A 0 226 3545 39.42 392 383 80.2
A 15 69 3496 38.81 392 383 80.2
B 3 209 58346 763.66 390 381 75.9
B 5 236 36283 472.99 390 381 75.9
B 4 216 19726 254.86 390 381 75.9
C 14 238 58235 651.94 375 377 88.7
C 7 247 8711 93.9 375 377 88.7
C 15 127 6484 68.81 375 377 88.7
D 1 52 637694 6561.43 376 366 97.1
D 10 70 31754 323.15 376 366 97.1
D 15 145 14846 149.07 376 366 97.1

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