ASTROSAT CZTI

Data Quality Report

Orbit 47626

Creation date: 2024-07-19T05:24:49.131735
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/AS1A13_071T01_9000006340_47626cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47626cztM0_level2_quad_clean.evt
Size (bytes)579,954,240126,149,760
Size553.1 MB 120.3 MB
Events in quadrant A8,325,786828,382
Events in quadrant B4,425,353841,851
Events in quadrant C3,864,502826,339
Events in quadrant D4,228,806763,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302310
B0188100
C0174640
D0183150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80463914.859558%
B80463364.175988%
C8047640.795327%
D8047841.043867%

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 8046 8046 64 64 0.80% 0.80%
B 8046 8046 72 72 0.89% 0.89%
C 8047 8047 26 26 0.32% 0.32%
D 8047 8047 40 40 0.50% 0.50%

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 10 83 4187377 22102.17 904 884 189.4
A 9 191 401619 2115.64 904 884 189.4
A 13 248 208281 1094.93 904 884 189.4
B 5 172 592225 3251.27 901 872 181.9
B 0 200 104058 567.32 901 872 181.9
B 0 190 58502 316.85 901 872 181.9
C 14 254 269474 1272.6 890 892 211.0
C 3 233 96983 455.3 890 892 211.0
C 1 3 28209 129.43 890 892 211.0
D 2 249 276183 1227.57 890 861 224.3
D 2 165 261603 1162.56 890 861 224.3
D 2 120 56641 248.7 890 861 224.3

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