ASTROSAT CZTI

Data Quality Report

Orbit 19776

Creation date: 2024-06-27T18:07:13.336097
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/AS1A05_155T04_9000002956_19776cztM0_level2.evt modeM0/AS1A05_155T04_9000002956_19776cztM0_level2_quad_clean.evt
Size (bytes)129,738,24014,849,280
Size123.7 MB 14.2 MB
Events in quadrant A928,13378,807
Events in quadrant B897,04481,440
Events in quadrant C962,59280,519
Events in quadrant D1,020,31180,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039011
B038011
C039641
D042872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17411669.534750%
B174117710.166571%
C17411488.500862%
D17401729.885057%

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 2021 1742 4 4 0.20% 0.23%
B 2021 1742 0 0 0.00% 0.00%
C 2021 1742 0 0 0.00% 0.00%
D 2020 1741 45 45 2.23% 2.58%

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 22400 460.31 227 221 48.2
A 4 2 16642 340.81 227 221 48.2
A 0 23 8016 161.78 227 221 48.2
B 12 111 5794 115.57 228 221 48.2
B 11 111 5174 102.72 228 221 48.2
B 14 111 4860 96.2 228 221 48.2
C 3 233 69283 1280.62 218 218 53.9
C 14 238 32658 601.5 218 218 53.9
C 8 128 4240 74.57 218 218 53.9
D 1 52 184145 3312.9 220 212 55.5
D 2 234 6070 105.51 220 212 55.5
D 12 218 4656 80.04 220 212 55.5

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