ASTROSAT CZTI

Data Quality Report

Orbit 11769

Creation date: 2024-06-27T16:18:03.519534
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_231T01_9000001740_11769cztM0_level2.evt modeM0/AS1A04_231T01_9000001740_11769cztM0_level2_quad_clean.evt
Size (bytes)553,596,480100,468,800
Size528.0 MB 95.8 MB
Events in quadrant A3,742,590649,866
Events in quadrant B4,115,474660,700
Events in quadrant C3,085,518672,346
Events in quadrant D5,380,635605,423

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152873
B0165022
C0134542
D0202692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6505931.429669%
B65053194.903920%
C6505851.306687%
D650567910.438125%

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 7556 6507 2 2 0.03% 0.03%
B 7556 6507 122 122 1.61% 1.87%
C 7556 6507 4 4 0.05% 0.06%
D 7556 6507 507 507 6.71% 7.79%

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 8 15 537523 3418.56 778 760 157.0
A 1 162 78472 494.94 778 760 157.0
A 1 178 42561 266.22 778 760 157.0
B 4 239 686390 4747.28 772 752 144.4
B 15 204 186057 1283.03 772 752 144.4
B 10 16 72374 495.9 772 752 144.4
C 14 234 25107 135.3 783 788 179.7
C 12 4 6224 30.24 783 788 179.7
C 13 61 5691 27.28 783 788 179.7
D 1 52 2010442 11459.49 736 716 175.4
D 13 122 272661 1550.63 736 716 175.4
D 10 199 92020 520.62 736 716 175.4

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