ASTROSAT CZTI

Data Quality Report

Orbit 18181

Creation date: 2024-06-27T17:46:18.088087
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_063T02_9000002708_18181cztM0_level2.evt modeM0/AS1A05_063T02_9000002708_18181cztM0_level2_quad_clean.evt
Size (bytes)256,000,32030,323,520
Size244.1 MB 28.9 MB
Events in quadrant A1,776,354171,459
Events in quadrant B1,866,083172,706
Events in quadrant C1,896,871167,095
Events in quadrant D1,981,664165,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072670
B075960
C076290
D079480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A339250.147406%
B3392200.589623%
C3392381.120283%
D3392561.650943%

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 3392 3392 2 2 0.06% 0.06%
B 3392 3392 9 9 0.27% 0.27%
C 3392 3392 10 10 0.29% 0.29%
D 3392 3392 46 46 1.36% 1.36%

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 4 2 16899 178.88 454 447 92.0
A 15 174 8249 84.83 454 447 92.0
A 3 15 5013 49.65 454 447 92.0
B 5 172 52633 619.87 447 437 84.2
B 7 220 18759 217.59 447 437 84.2
B 0 189 16622 192.21 447 437 84.2
C 4 254 133973 1327.74 433 437 100.6
C 14 238 69429 685.98 433 437 100.6
C 5 218 4598 41.37 433 437 100.6
D 7 238 254505 2312.53 443 430 109.9
D 10 70 18248 162.18 443 430 109.9
D 2 234 16520 146.45 443 430 109.9

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