ASTROSAT CZTI

Data Quality Report

Orbit 21494

Creation date: 2024-06-27T18:28:35.036702
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_141T01_9000003174_21494cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21494cztM0_level2_quad_clean.evt
Size (bytes)490,265,28076,936,320
Size467.6 MB 73.4 MB
Events in quadrant A3,473,499473,732
Events in quadrant B3,676,611485,032
Events in quadrant C3,545,223472,740
Events in quadrant D3,726,831460,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141750
B0148000
C0145310
D0148620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62661241.978934%
B62661642.617300%
C62661872.984360%
D62661612.569422%

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 7556 6266 0 0 0.00% 0.00%
B 7556 6266 15 15 0.20% 0.24%
C 7556 6266 0 0 0.00% 0.00%
D 7556 6266 53 53 0.70% 0.85%

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 8550 43.09 902 888 177.8
A 0 226 7721 38.42 902 888 177.8
A 3 137 6707 32.72 902 888 177.8
B 3 64 111380 667.68 896 877 165.5
B 0 230 33077 194.56 896 877 165.5
B 12 111 18548 106.77 896 877 165.5
C 14 238 140229 701.46 873 881 198.7
C 13 61 6343 27.5 873 881 198.7
C 3 202 2089 6.08 873 881 198.7
D 13 153 119619 564.82 885 860 210.3
D 7 38 104796 494.32 885 860 210.3
D 5 222 43311 201.9 885 860 210.3

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