ASTROSAT CZTI

Data Quality Report

Orbit 37001

Creation date: 2024-06-27T21:34:04.325934
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/AS1A11_079T01_9000005254_37001cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_37001cztM0_level2_quad_clean.evt
Size (bytes)400,098,24067,193,280
Size381.6 MB 64.1 MB
Events in quadrant A2,458,527432,806
Events in quadrant B2,974,995435,502
Events in quadrant C2,829,358433,365
Events in quadrant D3,519,349387,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104153
B0118886
C0113812
D01375427

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927100.202963%
B4924891.807474%
C4927370.750964%
D49233667.434491%

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 7050 4928 0 0 0.00% 0.00%
B 7050 4927 75 75 1.06% 1.52%
C 7050 4928 35 35 0.50% 0.71%
D 7050 4926 362 362 5.13% 7.35%

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 209821 1805.52 579 569 115.9
A 13 254 6724 53.11 579 569 115.9
A 13 6 6264 49.14 579 569 115.9
B 5 200 366405 3359.73 572 556 108.9
B 5 184 109556 1000.99 572 556 108.9
B 0 213 75567 688.85 572 556 108.9
C 15 214 212690 1606.85 569 576 132.0
C 14 254 115468 870.35 569 576 132.0
C 0 207 106613 803.27 569 576 132.0
D 2 153 580740 4378.14 546 532 132.5
D 12 17 519873 3918.85 546 532 132.5
D 1 52 162279 1220.51 546 532 132.5

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