ASTROSAT CZTI

Data Quality Report

Orbit 34061

Creation date: 2024-06-27T20:56:01.984359
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/AS1A06_003T04_9000004866_34061cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34061cztM0_level2_quad_clean.evt
Size (bytes)615,623,04058,564,800
Size587.1 MB 55.9 MB
Events in quadrant A5,063,139395,789
Events in quadrant B6,506,172299,926
Events in quadrant C2,854,415406,331
Events in quadrant D3,944,300381,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179461
B0220991
C0113801
D0146371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A409866416.203026%
B4098194147.364568%
C40981042.537823%
D40981523.709126%

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 4098 4098 551 551 13.45% 13.45%
B 4097 4097 1846 1846 45.06% 45.06%
C 4098 4098 99 99 2.42% 2.42%
D 4098 4098 116 116 2.83% 2.83%

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 15 169 3064977 30349.33 511 503 101.0
A 10 83 10323 97.25 511 503 101.0
A 7 144 8287 77.09 511 503 101.0
B 5 31 1867770 22665.05 431 422 82.4
B 5 15 1673030 20301.38 431 422 82.4
B 5 14 879870 10674.35 431 422 82.4
C 15 214 176494 1518.53 505 512 115.9
C 0 10 168391 1448.61 505 512 115.9
C 0 207 162707 1399.56 505 512 115.9
D 13 168 975267 7816.21 508 493 124.7
D 8 195 540909 4333.32 508 493 124.7
D 13 249 143725 1148.5 508 493 124.7

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