ASTROSAT CZTI

Data Quality Report

Orbit 37400

Creation date: 2024-06-27T21:39:31.803073
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_002T01_9000005322_37400cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37400cztM0_level2_quad_clean.evt
Size (bytes)119,445,12020,021,760
Size113.9 MB 19.1 MB
Events in quadrant A651,590137,231
Events in quadrant B653,278138,031
Events in quadrant C1,486,365111,298
Events in quadrant D745,452132,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026192
B026451
C051441
D029591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114160.525855%
B1141252.191060%
C114137432.778265%
D1141373.242770%

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 2813 1142 3 3 0.11% 0.26%
B 2813 1142 12 12 0.43% 1.05%
C 2812 1140 309 309 10.99% 27.11%
D 2813 1142 31 31 1.10% 2.71%

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 100084 3423.81 135 132 29.2
A 2 79 9015 304.28 135 132 29.2
A 9 143 6024 201.83 135 132 29.2
B 5 172 68904 2477.38 134 130 27.8
B 0 229 41806 1501.24 134 130 27.8
B 0 190 5573 196.05 134 130 27.8
C 1 23 938941 35867.75 107 108 26.2
C 0 10 62873 2397.91 107 108 26.2
C 15 214 43590 1661.21 107 108 26.2
D 2 250 63651 1908.48 128 124 33.3
D 1 47 48459 1452.08 128 124 33.3
D 12 235 43613 1306.5 128 124 33.3

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