ASTROSAT CZTI

Data Quality Report

Orbit 24925

Creation date: 2024-06-27T19:11:31.326526
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_205T01_9000003652_24925cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24925cztM0_level2_quad_clean.evt
Size (bytes)498,600,000144,224,640
Size475.5 MB 137.5 MB
Events in quadrant A3,220,328996,945
Events in quadrant B3,376,5151,025,990
Events in quadrant C3,968,736973,864
Events in quadrant D4,117,727942,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132362
B0138322
C0156622
D0163062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149130.211416%
B6149440.715564%
C61491572.553261%
D61491732.813466%

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 7529 6150 0 0 0.00% 0.00%
B 7529 6150 7 7 0.09% 0.11%
C 7529 6150 12 12 0.16% 0.20%
D 7529 6150 85 85 1.13% 1.38%

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 9256 51.72 834 822 163.1
A 0 226 7188 39.04 834 822 163.1
A 3 137 6643 35.69 834 822 163.1
B 4 216 25699 166.04 837 820 149.8
B 4 80 23421 150.84 837 820 149.8
B 10 251 22591 145.3 837 820 149.8
C 7 247 637828 3414.32 818 824 186.6
C 14 238 134516 716.58 818 824 186.6
C 13 61 5692 26.09 818 824 186.6
D 1 52 889333 4575.15 816 795 194.2
D 8 195 75283 383.54 816 795 194.2
D 1 239 48977 248.09 816 795 194.2

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