ASTROSAT CZTI

Data Quality Report

Orbit 31062

Creation date: 2024-06-27T20:22:54.420211
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/AS1C06_002T01_9000004490_31062cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31062cztM0_level2_quad_clean.evt
Size (bytes)580,510,080123,701,760
Size553.6 MB 118.0 MB
Events in quadrant A3,099,531856,260
Events in quadrant B5,414,593840,649
Events in quadrant C3,457,058831,299
Events in quadrant D5,202,475797,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132241
B0202851
C0143631
D0198321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019530.880545%
B60191482.458880%
C60191883.123442%
D60192003.322811%

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 7289 6019 1 1 0.01% 0.02%
B 7289 6020 22 22 0.30% 0.37%
C 7289 6019 30 30 0.41% 0.50%
D 7289 6019 104 104 1.43% 1.73%

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 13 254 13269 79.43 800 785 157.2
A 3 137 7154 40.52 800 785 157.2
A 8 255 7095 40.15 800 785 157.2
B 6 159 1905349 13272.2 786 766 143.5
B 0 183 215985 1499.77 786 766 143.5
B 4 80 60974 419.56 786 766 143.5
C 14 238 127165 713.86 775 783 177.0
C 0 10 124749 700.21 775 783 177.0
C 3 233 97835 548.19 775 783 177.0
D 8 195 1760471 9634.59 779 760 182.6
D 13 249 199768 1089.59 779 760 182.6
D 13 174 75354 408.41 779 760 182.6

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