ASTROSAT CZTI

Data Quality Report

Orbit 38783

Creation date: 2024-06-27T21:56:21.611689
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/AS1A12_051T01_9000005394_38783cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38783cztM0_level2_quad_clean.evt
Size (bytes)307,664,64084,003,840
Size293.4 MB 80.1 MB
Events in quadrant A2,879,541557,239
Events in quadrant B2,908,619574,525
Events in quadrant C2,460,267557,956
Events in quadrant D2,753,615506,462

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114923
B0119402
C0102082
D0113182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49571072.158564%
B49571793.611055%
C4957110.221908%
D4957871.755094%

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 6930 4958 92 92 1.33% 1.86%
B 6930 4958 128 128 1.85% 2.58%
C 6930 4958 5 5 0.07% 0.10%
D 6930 4958 74 74 1.07% 1.49%

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 377847 3366.35 553 543 112.1
A 7 3 332691 2963.46 553 543 112.1
A 15 223 16677 143.95 553 543 112.1
B 4 171 632965 5920.07 551 536 106.8
B 5 200 82020 762.76 551 536 106.8
B 12 111 13473 121.1 551 536 106.8
C 15 214 222811 1713.34 551 555 129.7
C 0 239 45104 343.42 551 555 129.7
C 0 10 21577 162.06 551 555 129.7
D 2 16 173729 1311.83 543 529 132.0
D 10 118 168690 1273.66 543 529 132.0
D 2 249 163237 1232.36 543 529 132.0

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