ASTROSAT CZTI

Data Quality Report

Orbit 21460

Creation date: 2024-06-27T18:28:08.509597
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_005T09_9000003168_21460cztM0_level2.evt modeM0/AS1A06_005T09_9000003168_21460cztM0_level2_quad_clean.evt
Size (bytes)60,606,7209,270,720
Size57.8 MB 8.8 MB
Events in quadrant A296,48159,656
Events in quadrant B306,41861,265
Events in quadrant C307,21557,039
Events in quadrant D876,11347,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013500
B013490
C013510
D030530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67410.148368%
B67400.000000%
C67440.593472%
D67413820.474777%

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 674 674 0 0 0.00% 0.00%
B 674 674 0 0 0.00% 0.00%
C 674 674 0 0 0.00% 0.00%
D 673 673 170 170 25.26% 25.26%

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 13 254 847 43.68 76 74 17.7
A 3 137 682 34.35 76 74 17.7
A 0 226 662 33.22 76 74 17.7
B 12 111 1866 104.22 78 76 17.2
B 11 111 1550 85.82 78 76 17.2
B 14 111 1397 76.91 78 76 17.2
C 14 238 12198 617.04 75 76 19.6
C 13 61 508 21.99 75 76 19.6
C 3 202 225 7.58 75 76 19.6
D 12 235 576266 30529.27 69 67 18.9
D 13 174 18232 962.45 69 67 18.9
D 14 35 8943 470.29 69 67 18.9

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