ASTROSAT CZTI

Data Quality Report

Orbit 27128

Creation date: 2024-06-27T19:36:48.797312
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/AS1T03_244T01_9000003912_27128cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27128cztM0_level2_quad_clean.evt
Size (bytes)620,277,12094,248,000
Size591.5 MB 89.9 MB
Events in quadrant A4,253,999622,287
Events in quadrant B3,797,106635,447
Events in quadrant C3,284,443617,478
Events in quadrant D7,000,538516,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168250
B0153960
C0138490
D0253460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66241482.234300%
B66241772.672101%
C6624761.147343%
D6624145922.025966%

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 7649 6625 117 117 1.53% 1.77%
B 7649 6625 117 117 1.53% 1.77%
C 7649 6625 1 1 0.01% 0.02%
D 7649 6625 1207 1207 15.78% 18.22%

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 6 16 559800 3435.22 815 797 162.7
A 14 235 474383 2910.31 815 797 162.7
A 13 248 51727 312.98 815 797 162.7
B 10 245 441634 2854.24 816 796 154.4
B 3 112 54465 347.48 816 796 154.4
B 7 205 45995 292.64 816 796 154.4
C 14 238 127739 677.42 799 804 187.4
C 2 16 19670 100.68 799 804 187.4
C 15 208 16833 85.54 799 804 187.4
D 1 52 3524854 18829.12 718 706 187.2
D 2 250 342092 1823.99 718 706 187.2
D 7 38 338089 1802.6 718 706 187.2

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