ASTROSAT CZTI

Data Quality Report

Orbit 12018

Creation date: 2024-06-27T16:21:15.158242
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_112T01_9000001778_12018cztM0_level2.evt modeM0/AS1A04_112T01_9000001778_12018cztM0_level2_quad_clean.evt
Size (bytes)689,644,800122,765,760
Size657.7 MB 117.1 MB
Events in quadrant A3,837,673822,487
Events in quadrant B9,406,557772,964
Events in quadrant C3,204,902821,718
Events in quadrant D3,936,715785,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165082
B0331901
C0150401
D0169591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73961892.555435%
B7396114415.467820%
C7396801.081666%
D73961021.379124%

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 7637 7398 50 50 0.65% 0.68%
B 7637 7397 659 659 8.63% 8.91%
C 7637 7397 4 4 0.05% 0.05%
D 7637 7398 32 32 0.42% 0.43%

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 13 248 196468 1136.89 832 811 172.1
A 1 162 154193 891.25 832 811 172.1
A 1 178 84294 485.09 832 811 172.1
B 4 206 4504334 29706.63 797 776 151.6
B 3 64 798879 5264.49 797 776 151.6
B 4 239 765784 5046.19 797 776 151.6
C 14 234 15969 80.23 817 817 188.9
C 13 61 6170 28.34 817 817 188.9
C 8 222 2715 10.05 817 817 188.9
D 8 195 279288 1436.24 809 784 193.9
D 1 52 220642 1133.8 809 784 193.9
D 13 104 107843 552.1 809 784 193.9

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