ASTROSAT CZTI

Data Quality Report

Orbit 08797

Creation date: 2024-06-27T15:37:21.021334
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/AS1G07_010T03_9000001224_08797cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08797cztM0_level2_quad_clean.evt
Size (bytes)571,518,72082,002,240
Size545.0 MB 78.2 MB
Events in quadrant A3,815,202520,016
Events in quadrant B3,280,587530,326
Events in quadrant C3,221,529515,301
Events in quadrant D6,541,120454,619

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01384
B01380
C01382
D01384

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015847235
B014168244
C014079192
D024443513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66421572.363746%
B66311121.689036%
C6652931.398076%
D6602107916.343532%

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 8849 6731 27 27 0.31% 0.40%
B 8851 6729 1 1 0.01% 0.01%
C 8851 6735 10 10 0.11% 0.15%
D 8850 6711 897 897 10.14% 13.37%

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 8 5 429933 2499.57 841 824 171.7
A 15 223 62568 359.66 841 824 171.7
A 13 248 58715 337.22 841 824 171.7
B 4 173 19817 119.02 835 815 159.7
B 12 111 18239 109.14 835 815 159.7
B 11 111 14817 87.7 835 815 159.7
C 14 234 44930 232.55 812 816 189.7
C 13 61 6273 28.77 812 816 189.7
C 12 4 5689 25.69 812 816 189.7
D 2 16 3212022 16804.58 758 739 191.1
D 2 152 249017 1299.23 758 739 191.1
D 1 52 100080 519.85 758 739 191.1

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