ASTROSAT CZTI

Data Quality Report

Orbit 09164

Creation date: 2024-06-27T15:42:10.890985
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/AS1C02_027T01_9000001280_09164cztM0_level2.evt modeM0/AS1C02_027T01_9000001280_09164cztM0_level2_quad_clean.evt
Size (bytes)439,833,600117,783,360
Size419.5 MB 112.3 MB
Events in quadrant A3,735,639778,447
Events in quadrant B3,071,700793,991
Events in quadrant C2,806,570793,537
Events in quadrant D3,279,895763,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151592
B0133271
C0127601
D0141571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6265971.548284%
B6265831.324820%
C6265651.037510%
D62651722.745411%

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 7220 6265 9 9 0.12% 0.14%
B 7220 6265 11 11 0.15% 0.18%
C 7220 6265 0 0 0.00% 0.00%
D 7220 6265 121 121 1.68% 1.93%

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 450437 3070.3 727 712 146.5
A 15 174 372431 2537.75 727 712 146.5
A 1 162 45196 303.69 727 712 146.5
B 3 220 78311 570.23 727 708 136.1
B 8 234 48432 350.68 727 708 136.1
B 0 229 41037 296.34 727 708 136.1
C 13 61 5364 28.22 718 719 164.6
C 12 4 3062 14.23 718 719 164.6
C 8 222 2553 11.14 718 719 164.6
D 1 52 246833 1406.4 710 691 175.0
D 12 233 220408 1255.42 710 691 175.0
D 7 71 49421 278.43 710 691 175.0

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