ASTROSAT CZTI

Data Quality Report

Orbit 20200112_A08_008T02_9000003430_level2

Creation date: 2020-01-16T09:59:20.406527
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A08_008T02_9000003430cztM0_level2_bc.evt modeM0/AS1A08_008T02_9000003430cztM0_level2_quad_clean.evt
Size (bytes)2,772,599,0401,296,077,760
Size2.6 GB 1.2 GB
Events in quadrant A14,988,2908,901,024
Events in quadrant B16,036,6449,002,805
Events in quadrant C17,646,4508,452,169
Events in quadrant D30,396,9847,973,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01485570
B01523480
C01590650
D02039770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014640
B014640
C014640
D014640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A719016460.898458%
B719019271.289273%
C7190119962.776039%
D7190161238.515876%

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 83315 71901 0 0 0.00% 0.00%
B 83315 71901 11 11 0.01% 0.02%
C 83315 71895 48 48 0.06% 0.07%
D 83315 71894 2404 2404 2.89% 3.34%

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 13 254 103653 118.0 3872 3817 846.0
A 0 226 25018 25.06 3872 3817 846.0
A 12 194 24531 24.48 3872 3817 846.0
B 0 190 454427 610.37 3905 3818 738.3
B 15 32 142148 187.37 3905 3818 738.3
B 12 17 122415 160.65 3905 3818 738.3
C 2 16 1421038 1654.05 3670 3662 856.9
C 0 10 1247456 1451.48 3670 3662 856.9
C 7 247 744615 864.68 3670 3662 856.9
D 1 52 9476234 11146.21 3630 3513 849.9
D 13 153 2912548 3422.96 3630 3513 849.9
D 7 238 1178375 1382.42 3630 3513 849.9

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