ASTROSAT CZTI

Data Quality Report

Orbit 20190206_A05_063T02_9000002708_level2

Creation date: 2019-02-12T12:33:37.095475
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_063T02_9000002708cztM0_level2_bc.evt modeM0/AS1A05_063T02_9000002708cztM0_level2_quad_clean.evt
Size (bytes)2,434,400,640726,183,360
Size2.3 GB 692.5 MB
Events in quadrant A13,723,6464,549,832
Events in quadrant B13,879,9084,599,605
Events in quadrant C14,756,7754,431,047
Events in quadrant D27,295,2274,315,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01288890
B01297660
C01347680
D01714250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012180
B012180
C012180
D012180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597537451.246799%
B5975311511.926263%
C5975316902.828310%
D5975333765.649926%

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 68874 59754 30 30 0.04% 0.05%
B 68874 59752 48 48 0.07% 0.08%
C 68874 59752 58 58 0.08% 0.10%
D 68874 59753 468 468 0.68% 0.78%

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 15 174 996388 1430.89 3226 3172 694.1
A 4 2 317547 452.91 3226 3172 694.1
A 11 29 25355 31.96 3226 3172 694.1
B 7 220 389513 644.87 3225 3147 599.1
B 4 171 297364 491.07 3225 3147 599.1
B 10 247 235208 387.32 3225 3147 599.1
C 4 254 2790925 3903.94 3076 3058 714.1
C 3 233 66282 88.53 3076 3058 714.1
C 1 208 28983 36.3 3076 3058 714.1
D 7 238 12865063 17508.11 3147 3038 734.6
D 13 168 620048 839.89 3147 3038 734.6
D 5 222 412360 557.18 3147 3038 734.6

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