ASTROSAT CZTI

Data Quality Report

Orbit 07266

Creation date: 2024-06-27T15:17:43.842276
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/AS1A02_155T01_9000000994_07266cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07266cztM0_level2_quad_clean.evt
Size (bytes)474,413,760106,611,840
Size452.4 MB 101.7 MB
Events in quadrant A3,139,365693,690
Events in quadrant B3,310,577722,897
Events in quadrant C3,888,656693,844
Events in quadrant D3,582,250659,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137153
B0141852
C0158482
D0153462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577380.577771%
B6577661.003497%
C65771332.022199%
D6577961.459632%

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 7952 6579 1 1 0.01% 0.02%
B 7952 6579 16 16 0.20% 0.24%
C 7952 6579 114 114 1.43% 1.73%
D 7952 6579 45 45 0.57% 0.68%

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 70176 429.56 795 779 161.6
A 0 226 7478 41.47 795 779 161.6
A 12 194 7110 39.19 795 779 161.6
B 4 239 59973 386.51 815 795 153.1
B 4 81 38211 244.38 815 795 153.1
B 0 214 37954 242.7 815 795 153.1
C 7 247 791462 4365.54 785 790 181.1
C 9 68 24592 131.42 785 790 181.1
C 13 61 6193 29.83 785 790 181.1
D 2 216 475470 2535.74 767 744 187.2
D 14 34 131633 699.14 767 744 187.2
D 2 14 77472 409.84 767 744 187.2

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