ASTROSAT CZTI

Data Quality Report

Orbit 20160816_G05_156T09_9000000604_level2

Creation date: 2021-09-02T14:55:21.762705
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/AS1G05_156T09_9000000604cztM0_level2_bc.evt modeM0/AS1G05_156T09_9000000604cztM0_level2_quad_clean.evt
Size (bytes)3,282,255,360976,098,240
Size3.1 GB 930.9 MB
Events in quadrant A19,226,1086,273,348
Events in quadrant B21,584,8396,206,563
Events in quadrant C23,819,9225,908,179
Events in quadrant D29,394,6795,761,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01190
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01767580
B01822380
C02034990
D02136970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016120
B016120
C016100
D016080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7908820142.546530%
B7910218132.291977%
C7888150986.462900%
D7871741645.289836%

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 96888 79215 91 91 0.09% 0.11%
B 96888 79243 230 230 0.24% 0.29%
C 96888 78984 118 118 0.12% 0.15%
D 96888 78907 551 551 0.57% 0.70%

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 0 50 1896721 2254.33 3765 3684 839.7
A 8 15 973612 1155.04 3765 3684 839.7
A 14 238 890799 1056.42 3765 3684 839.7
B 14 167 2617199 3581.1 3774 3661 729.8
B 8 3 1269911 1735.03 3774 3661 729.8
B 15 204 1009702 1378.49 3774 3661 729.8
C 14 48 6426670 7854.43 3591 3522 817.8
C 8 208 2924275 3571.59 3591 3522 817.8
C 1 16 234651 282.63 3591 3522 817.8
D 11 132 5220438 6027.13 3660 3515 865.6
D 13 235 2809301 3241.53 3660 3515 865.6
D 2 136 1614454 1861.12 3660 3515 865.6

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