ASTROSAT CZTI

Data Quality Report

Orbit 41734

Creation date: 2024-06-27T22:32:13.630611
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/AS1A12_077T11_9000005696_41734cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41734cztM0_level2_quad_clean.evt
Size (bytes)381,104,64090,907,200
Size363.4 MB 86.7 MB
Events in quadrant A2,997,294636,206
Events in quadrant B2,554,107649,311
Events in quadrant C3,451,936572,756
Events in quadrant D4,706,934537,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118992
B0107232
C0132502
D0176412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5109140.274026%
B5109190.371893%
C51092645.167352%
D51092675.226072%

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 7081 5109 3 3 0.04% 0.06%
B 7081 5108 12 12 0.17% 0.23%
C 7081 5108 237 237 3.35% 4.64%
D 7081 5108 236 236 3.33% 4.62%

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 532145 4213.62 616 605 126.1
A 3 1 38554 300.83 616 605 126.1
A 15 223 23781 183.72 616 605 126.1
B 15 32 85236 730.27 605 591 115.9
B 0 245 41601 353.81 605 591 115.9
B 0 186 26219 221.1 605 591 115.9
C 0 10 705517 5292.32 571 575 133.2
C 3 233 286772 2148.61 571 575 133.2
C 15 214 203984 1527.08 571 575 133.2
D 12 79 1547170 10864.94 583 567 142.3
D 13 249 529837 3718.14 583 567 142.3
D 2 249 214540 1503.17 583 567 142.3

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