ASTROSAT CZTI

Data Quality Report

Orbit 36261

Creation date: 2022-06-13T15:08:20.588738
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/AS1A10_071T36_9000005182_36261cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36261cztM0_level2_quad_clean.evt
Size (bytes)488,799,36061,476,480
Size466.2 MB 58.6 MB
Events in quadrant A2,537,270393,614
Events in quadrant B5,170,869379,003
Events in quadrant C2,865,813383,603
Events in quadrant D3,896,329360,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104693
B0186052
C0112652
D0147652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4913130.264604%
B491384617.219621%
C49131242.523916%
D49133236.574394%

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 7007 4914 3 3 0.04% 0.06%
B 7007 4914 688 688 9.82% 14.00%
C 7007 4914 105 105 1.50% 2.14%
D 7007 4914 303 303 4.32% 6.17%

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 169658 1386.39 607 595 121.9
A 9 143 8776 67.09 607 595 121.9
A 13 254 7647 57.83 607 595 121.9
B 5 172 1111322 10286.74 573 561 108.0
B 5 236 656530 6074.92 573 561 108.0
B 4 171 539211 4988.43 573 561 108.0
C 0 10 363959 2655.61 587 593 136.8
C 15 214 204530 1490.45 587 593 136.8
C 0 207 10809 74.66 587 593 136.8
D 12 6 1014219 7256.92 570 556 139.7
D 13 249 312663 2234.41 570 556 139.7
D 12 235 109274 778.32 570 556 139.7

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