ASTROSAT CZTI

Data Quality Report

Orbit 37480

Creation date: 2024-06-27T21:40:34.188861
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/AS1C07_001T11_9000005326_37480cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37480cztM0_level2_quad_clean.evt
Size (bytes)382,452,48094,847,040
Size364.7 MB 90.5 MB
Events in quadrant A2,738,334632,610
Events in quadrant B2,864,300641,428
Events in quadrant C2,651,979635,292
Events in quadrant D2,979,411604,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113193
B0119872
C0110942
D0124572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5125280.546341%
B51251172.282927%
C5125450.878049%
D51251192.321951%

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 7008 5126 23 23 0.33% 0.45%
B 7008 5126 95 95 1.36% 1.85%
C 7008 5126 41 41 0.59% 0.80%
D 7008 5126 114 114 1.63% 2.22%

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 10 83 277700 2409.97 566 555 115.0
A 13 248 191077 1656.72 566 555 115.0
A 13 6 18056 152.18 566 555 115.0
B 5 172 344571 3210.68 562 548 107.1
B 5 255 144975 1347.9 562 548 107.1
B 0 229 64513 596.97 562 548 107.1
C 15 214 219183 1716.16 549 553 127.4
C 14 254 130216 1017.8 549 553 127.4
C 15 159 86735 676.5 549 553 127.4
D 13 249 334464 2508.86 548 531 133.1
D 2 250 188293 1410.67 548 531 133.1
D 2 249 106079 792.99 548 531 133.1

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