ASTROSAT CZTI

Data Quality Report

Orbit 25274

Creation date: 2024-06-27T19:15:46.685347
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/AS1A09_027T02_9000003696_25274cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25274cztM0_level2_quad_clean.evt
Size (bytes)1,355,137,920282,372,480
Size1.3 GB 269.3 MB
Events in quadrant A7,921,2891,936,635
Events in quadrant B9,227,5581,915,280
Events in quadrant C8,280,1691,847,476
Events in quadrant D14,555,5551,772,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332750
B0373600
C0340970
D0544810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156771741.109906%
B156785393.437939%
C156782861.824212%
D156787084.515882%

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 19612 15680 0 0 0.00% 0.00%
B 19613 15681 211 211 1.08% 1.35%
C 19613 15681 5 5 0.03% 0.03%
D 19613 15681 413 413 2.11% 2.63%

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 3 1 54357 130.47 2041 2003 401.3
A 13 254 26074 59.99 2041 2003 401.3
A 0 226 18176 40.3 2041 2003 401.3
B 3 64 1208412 3352.9 1997 1954 359.8
B 0 190 75330 203.92 1997 1954 359.8
B 15 33 69638 188.1 1997 1954 359.8
C 14 238 317531 706.73 1964 1982 446.5
C 0 239 117361 258.41 1964 1982 446.5
C 0 207 95112 208.58 1964 1982 446.5
D 8 195 3944176 8496.72 1981 1931 464.0
D 1 52 2060109 4435.99 1981 1931 464.0
D 7 38 540986 1161.83 1981 1931 464.0

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