ASTROSAT CZTI

Data Quality Report

Orbit 12218

Creation date: 2024-06-27T16:23:56.186274
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_066T01_9000001802_12218cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12218cztM0_level2_quad_clean.evt
Size (bytes)158,117,76036,077,760
Size150.8 MB 34.4 MB
Events in quadrant A1,207,171243,101
Events in quadrant B1,537,073240,231
Events in quadrant C875,070241,138
Events in quadrant D1,042,838234,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048200
B058500
C038190
D043360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1828392.133479%
B1828693.774617%
C1828100.547046%
D1828221.203501%

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 1829 1829 16 16 0.87% 0.87%
B 1829 1829 31 31 1.69% 1.69%
C 1829 1829 7 7 0.38% 0.38%
D 1829 1829 14 14 0.77% 0.77%

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 5 16 90951 1993.85 218 214 45.5
A 1 162 72337 1584.83 218 214 45.5
A 13 251 47621 1041.72 218 214 45.5
B 15 204 413854 10110.36 213 208 40.9
B 4 239 127451 3110.08 213 208 40.9
B 0 219 57363 1396.99 213 208 40.9
C 0 207 34972 725.66 203 204 47.9
C 4 175 24290 502.71 203 204 47.9
C 15 208 18674 385.49 203 204 47.9
D 2 33 61043 1185.75 208 201 51.3
D 10 157 57619 1119.02 208 201 51.3
D 13 122 32142 622.5 208 201 51.3

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