ASTROSAT CZTI

Data Quality Report

Orbit 20190119_C04_011T01_9000002664_level2

Creation date: 2019-01-21T11:32:47.063235
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/AS1C04_011T01_9000002664cztM0_level2_bc.evt modeM0/AS1C04_011T01_9000002664cztM0_level2_quad_clean.evt
Size (bytes)329,909,760157,412,160
Size314.6 MB 150.1 MB
Events in quadrant A1,671,3291,074,634
Events in quadrant B1,870,7451,111,449
Events in quadrant C1,695,5831,075,181
Events in quadrant D4,236,536985,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157130
B0165080
C0159910
D0255130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7487650.868171%
B7487871.162014%
C74871411.883264%
D748780110.698544%

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 10177 7488 0 0 0.00% 0.00%
B 10177 7487 1 1 0.01% 0.01%
C 10177 7487 0 0 0.00% 0.00%
D 10177 7487 218 218 2.14% 2.91%

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 14652 150.1 431 424 94.8
A 0 226 2824 25.32 431 424 94.8
A 12 194 2822 25.3 431 424 94.8
B 0 189 85770 1017.93 443 433 83.8
B 0 219 25562 299.75 443 433 83.8
B 7 220 13080 150.86 443 433 83.8
C 3 233 23312 225.21 428 426 101.6
C 5 218 15558 148.9 428 426 101.6
C 9 160 6455 59.33 428 426 101.6
D 12 110 1331737 13806.88 411 398 96.4
D 7 238 638369 6616.19 411 398 96.4
D 5 222 476004 4932.35 411 398 96.4

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