ASTROSAT CZTI

Data Quality Report

Orbit 20629

Creation date: 2024-06-27T18:17:37.390734
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_005T02_9000003048_20629cztM0_level2.evt modeM0/AS1A06_005T02_9000003048_20629cztM0_level2_quad_clean.evt
Size (bytes)144,452,16035,300,160
Size137.8 MB 33.7 MB
Events in quadrant A874,544246,326
Events in quadrant B896,923244,054
Events in quadrant C858,084232,303
Events in quadrant D1,621,955215,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037691
B037981
C037241
D059931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177390.507614%
B1773110.620417%
C1773231.297236%
D177320911.787930%

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 1773 1773 0 0 0.00% 0.00%
B 1773 1773 0 0 0.00% 0.00%
C 1773 1773 0 0 0.00% 0.00%
D 1773 1773 148 148 8.35% 8.35%

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 12 16 18761 405.15 219 215 45.8
A 5 16 10252 219.27 219 215 45.8
A 12 194 5433 113.99 219 215 45.8
B 0 190 12655 286.59 216 212 43.4
B 0 189 10371 233.99 216 212 43.4
B 0 244 6250 139.07 216 212 43.4
C 14 238 32515 665.27 202 203 48.6
C 8 208 29978 613.04 202 203 48.6
C 3 233 3069 59.01 202 203 48.6
D 1 52 418126 8479.97 197 190 49.3
D 1 20 275875 5593.68 197 190 49.3
D 13 153 71502 1446.93 197 190 49.3

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