ASTROSAT CZTI

Data Quality Report

Orbit 15565

Creation date: 2024-06-27T17:10:35.573332
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/AS1G08_028T01_9000002306_15565cztM0_level2.evt modeM0/AS1G08_028T01_9000002306_15565cztM0_level2_quad_clean.evt
Size (bytes)617,829,120104,855,040
Size589.2 MB 100.0 MB
Events in quadrant A3,695,166690,414
Events in quadrant B3,857,288693,728
Events in quadrant C5,616,537639,115
Events in quadrant D5,030,634627,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159063
B0162562
C0217572
D0198382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75401211.604775%
B75401882.493369%
C7540103613.740053%
D75404646.153846%

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 7756 7543 3 3 0.04% 0.04%
B 7756 7542 11 11 0.14% 0.15%
C 7756 7543 497 497 6.41% 6.59%
D 7756 7543 360 360 4.64% 4.77%

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 9 143 28812 144.29 952 931 193.2
A 0 226 8563 39.5 952 931 193.2
A 12 194 7168 32.28 952 931 193.2
B 4 48 56753 308.25 944 920 181.1
B 0 189 32200 172.69 944 920 181.1
B 4 173 22252 117.77 944 920 181.1
C 3 233 2034095 9843.39 874 882 206.6
C 14 238 132786 638.59 874 882 206.6
C 8 128 11280 50.34 874 882 206.6
D 15 0 1116614 4920.94 912 884 226.7
D 5 222 209475 919.99 912 884 226.7
D 5 51 59486 258.46 912 884 226.7

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