ASTROSAT CZTI

Data Quality Report

Orbit 34793

Creation date: 2022-03-06T00:55:09.240404
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/AS1C07_004T01_9000004990_34793cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34793cztM0_level2_quad_clean.evt
Size (bytes)507,003,84069,638,400
Size483.5 MB 66.4 MB
Events in quadrant A2,648,322441,850
Events in quadrant B3,882,861428,842
Events in quadrant C3,074,322441,193
Events in quadrant D5,357,763393,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117953
B0153132
C0128372
D0199172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A577540.069264%
B57753666.337662%
C5775731.264069%
D57754808.311688%

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 7357 5776 0 0 0.00% 0.00%
B 7357 5776 264 264 3.59% 4.57%
C 7357 5776 58 58 0.79% 1.00%
D 7357 5776 474 474 6.44% 8.21%

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 10 83 52273 382.51 666 652 135.0
A 13 6 14336 101.39 666 652 135.0
A 13 254 10015 69.38 666 652 135.0
B 5 172 911424 7153.85 649 631 127.3
B 4 171 135899 1062.47 649 631 127.3
B 15 85 128033 1000.68 649 631 127.3
C 15 214 246200 1621.9 647 653 151.4
C 0 10 242507 1597.51 647 653 151.4
C 14 67 35919 232.94 647 653 151.4
D 8 195 1113727 7261.53 625 608 153.3
D 13 249 820085 5345.93 625 608 153.3
D 2 249 397424 2588.66 625 608 153.3

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