ASTROSAT CZTI

Data Quality Report

Orbit 27957

Creation date: 2024-06-27T19:46:25.582486
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/AS1A10_021T02_9000004036_27957cztM0_level2.evt modeM0/AS1A10_021T02_9000004036_27957cztM0_level2_quad_clean.evt
Size (bytes)658,805,760124,217,280
Size628.3 MB 118.5 MB
Events in quadrant A4,018,051825,488
Events in quadrant B4,184,228833,818
Events in quadrant C3,834,842791,642
Events in quadrant D7,368,545750,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173830
B0177160
C0167320
D0274490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80691722.131615%
B80701782.205700%
C80701381.710037%
D80706478.017348%

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 8559 8072 110 110 1.29% 1.36%
B 8560 8072 15 15 0.18% 0.19%
C 8560 8073 0 0 0.00% 0.00%
D 8560 8072 564 564 6.59% 6.99%

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 6 16 263623 1336.19 970 946 196.6
A 13 254 13756 65.16 970 946 196.6
A 3 137 9316 42.58 970 946 196.6
B 10 245 240908 1303.32 971 946 184.1
B 0 230 35793 189.27 971 946 184.1
B 5 172 30683 161.51 971 946 184.1
C 14 238 149049 678.9 932 935 218.2
C 3 233 44404 199.25 932 935 218.2
C 2 16 10049 41.78 932 935 218.2
D 1 52 2256133 10292.47 916 889 219.1
D 7 80 647458 2950.81 916 889 219.1
D 8 195 488599 2225.81 916 889 219.1

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