ASTROSAT CZTI

Data Quality Report

Orbit 16709

Creation date: 2024-06-27T17:26:32.840533
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/AS1T03_024T01_9000002472_16709cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16709cztM0_level2_quad_clean.evt
Size (bytes)761,834,880107,712,000
Size726.5 MB 102.7 MB
Events in quadrant A4,445,207713,089
Events in quadrant B3,891,110738,315
Events in quadrant C4,179,719701,765
Events in quadrant D10,053,665590,907

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B021
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018803726
B016997757
C017897733
D0367251668

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01608
B01606
C01606
D01606

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74442933.936056%
B74241962.640086%
C74473434.605882%
D7371212828.869896%

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 8007 7562 141 141 1.76% 1.86%
B 8007 7541 2 2 0.02% 0.03%
C 8007 7575 113 113 1.41% 1.49%
D 8007 7517 1447 1447 18.07% 19.25%

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 568394 3000.27 920 903 189.1
A 10 234 312382 1646.76 920 903 189.1
A 9 143 15424 76.77 920 903 189.1
B 15 35 116700 639.63 932 911 181.0
B 5 236 37997 204.87 932 911 181.0
B 0 189 25553 136.12 932 911 181.0
C 0 207 493555 2342.85 887 895 210.3
C 14 238 136410 644.44 887 895 210.3
C 3 233 72190 339.04 887 895 210.3
D 1 52 4593164 23588.84 783 761 194.7
D 2 16 2041547 10482.48 783 761 194.7
D 12 110 310912 1593.09 783 761 194.7

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