ASTROSAT CZTI

Data Quality Report

Orbit 06481

Creation date: 2024-06-27T15:07:47.389547
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/AS1A02_046T01_9000000864_06481cztM0_level2.evt modeM0/AS1A02_046T01_9000000864_06481cztM0_level2_quad_clean.evt
Size (bytes)416,036,160120,522,240
Size396.8 MB 114.9 MB
Events in quadrant A2,900,548811,155
Events in quadrant B3,097,839810,986
Events in quadrant C2,830,953803,049
Events in quadrant D3,332,883776,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132893
B0137052
C0131972
D0146562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6437240.372844%
B6437390.605872%
C6437200.310704%
D6437450.699083%

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 7562 6438 2 2 0.03% 0.03%
B 7562 6438 5 5 0.07% 0.08%
C 7562 6438 0 0 0.00% 0.00%
D 7562 6438 18 18 0.24% 0.28%

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 15 18800 120.98 740 725 149.4
A 15 174 12097 76.11 740 725 149.4
A 15 236 9173 56.54 740 725 149.4
B 0 219 54297 377.41 747 728 141.9
B 15 204 46994 325.96 747 728 141.9
B 4 172 31511 216.88 747 728 141.9
C 12 4 5821 30.45 723 726 167.3
C 13 61 5515 28.62 723 726 167.3
C 1 16 3254 15.11 723 726 167.3
D 8 195 242878 1387.73 718 696 174.5
D 2 152 236140 1349.12 718 696 174.5
D 2 14 39897 224.63 718 696 174.5

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