ASTROSAT CZTI

Data Quality Report

Orbit 00715

Creation date: 2024-06-27T14:01:57.785196
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/AS1P01_147T01_9000000106_00715cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00715cztM0_level2_quad_clean.evt
Size (bytes)1,297,180,80080,205,120
Size1.2 GB 76.5 MB
Events in quadrant A8,587,543503,234
Events in quadrant B8,921,930500,852
Events in quadrant C10,148,778477,925
Events in quadrant D11,171,695464,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304361
B0314681
C0350421
D0380611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6954771.107276%
B6927821.183774%
C6875630.916364%
D69282333.363164%

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 7234 6955 367 367 5.07% 5.28%
B 7234 6929 426 426 5.89% 6.15%
C 7234 6877 518 518 7.16% 7.53%
D 7235 6930 1497 1497 20.69% 21.60%

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 15 171 94207 172.31 2204 2224 533.8
A 13 67 20349 33.95 2204 2224 533.8
A 13 8 19071 31.56 2204 2224 533.8
B 14 50 77791 140.48 2257 2270 537.6
B 5 247 61868 110.86 2257 2270 537.6
B 7 221 58247 104.13 2257 2270 537.6
C 3 95 618249 1094.32 2014 2085 563.1
C 3 31 466060 824.03 2014 2085 563.1
C 3 15 416902 736.73 2014 2085 563.1
D 0 25 2649353 4287.72 1989 2066 617.4
D 14 52 285330 458.79 1989 2066 617.4
D 6 226 275172 442.34 1989 2066 617.4

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