ASTROSAT CZTI

Data Quality Report

Orbit 11419

Creation date: 2024-06-27T16:12:38.417953
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_024T04_9000001670_11419cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11419cztM0_level2_quad_clean.evt
Size (bytes)590,630,40083,462,400
Size563.3 MB 79.6 MB
Events in quadrant A4,336,588533,925
Events in quadrant B5,775,216515,710
Events in quadrant C3,149,682528,378
Events in quadrant D4,191,736501,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172543
B0215432
C0135412
D0167642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64092083.245436%
B640980412.544859%
C6409550.858168%
D64101792.792512%

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 7699 6410 71 71 0.92% 1.11%
B 7699 6410 448 448 5.82% 6.99%
C 7699 6410 2 2 0.03% 0.03%
D 7700 6411 92 92 1.19% 1.44%

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 5 920726 5532.92 835 819 166.3
A 1 162 54623 323.61 835 819 166.3
A 1 178 32048 187.83 835 819 166.3
B 4 239 1522046 10383.72 805 791 146.5
B 3 64 589614 4019.16 805 791 146.5
B 11 51 176177 1197.14 805 791 146.5
C 0 207 18891 99.33 802 805 182.1
C 13 61 5891 27.93 802 805 182.1
C 8 222 3667 15.72 802 805 182.1
D 5 222 398714 2080.72 805 784 191.2
D 1 52 272005 1418.18 805 784 191.2
D 13 152 108393 562.67 805 784 191.2

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