ASTROSAT CZTI

Data Quality Report

Orbit 14957

Creation date: 2024-06-27T17:01:49.210252
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/AS1T02_056T01_9000002210_14957cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14957cztM0_level2_quad_clean.evt
Size (bytes)759,121,92090,391,680
Size724.0 MB 86.2 MB
Events in quadrant A3,424,343598,322
Events in quadrant B3,597,629593,892
Events in quadrant C3,296,185586,052
Events in quadrant D12,206,099478,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146133
B0151802
C0141712
D0410042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6878670.974120%
B6878911.323059%
C6878170.247165%
D6878343849.985461%

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 7254 6881 10 10 0.14% 0.15%
B 7254 6881 41 41 0.57% 0.60%
C 7254 6881 0 0 0.00% 0.00%
D 7254 6881 3277 3277 45.18% 47.62%

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 1 162 88382 526.05 814 794 166.5
A 12 189 52239 308.98 814 794 166.5
A 1 178 41826 246.44 814 794 166.5
B 3 64 198746 1274.05 811 790 155.4
B 0 190 31771 199.39 811 790 155.4
B 3 209 24755 154.24 811 790 155.4
C 3 233 185967 1005.09 790 794 184.2
C 7 247 15043 77.34 790 794 184.2
C 14 234 14855 76.32 790 794 184.2
D 7 254 8596619 59561.25 597 581 144.3
D 13 249 1128800 7817.34 597 581 144.3
D 7 38 78027 536.62 597 581 144.3

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