ASTROSAT CZTI

Data Quality Report

Orbit 11167

Creation date: 2024-06-27T16:09:15.352982
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_042T01_9000001630_11167cztM0_level2.evt modeM0/AS1A04_042T01_9000001630_11167cztM0_level2_quad_clean.evt
Size (bytes)114,641,28011,168,640
Size109.3 MB 10.7 MB
Events in quadrant A907,51856,611
Events in quadrant B940,80556,658
Events in quadrant C714,68057,547
Events in quadrant D802,89154,287

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06432
B06735
C06636
D06431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084
B073
C073
D073

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074683823
B075653828
C064153215
D074904035

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1506362.390438%
B1510825.430464%
C1530130.849673%
D1533231.500326%

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 3842 1632 9 9 0.23% 0.55%
B 3831 1625 23 23 0.60% 1.42%
C 4072 1653 0 0 0.00% 0.00%
D 3840 1646 5 5 0.13% 0.30%

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 14 238 126350 3166.97 184 180 39.8
A 8 5 64425 1612.6 184 180 39.8
A 8 15 6928 169.38 184 180 39.8
B 4 239 91049 2436.42 182 177 37.3
B 10 16 37572 1002.62 182 177 37.3
B 4 80 28880 769.57 182 177 37.3
C 5 128 4813 103.76 181 182 44.6
C 13 61 1442 28.23 181 182 44.6
C 12 4 794 13.71 181 182 44.6
D 10 157 46526 1017.52 180 175 45.6
D 10 253 14959 324.54 180 175 45.6
D 5 222 12060 260.9 180 175 45.6

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