ASTROSAT CZTI

Data Quality Report

Orbit 20171205_A04_088T03_9000001750_level2

Creation date: 2018-01-05T14:37:06.817110
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/AS1A04_088T03_9000001750cztM0_level2_bc.evt modeM0/AS1A04_088T03_9000001750cztM0_level2_quad_clean.evt
Size (bytes)5,018,250,2401,812,911,040
Size4.7 GB 1.7 GB
Events in quadrant A29,702,03411,626,360
Events in quadrant B45,802,24011,430,665
Events in quadrant C26,916,52811,389,291
Events in quadrant D40,063,06210,914,810

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02989180
B03600200
C02858120
D03271200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028420
B028420
C028420
D028420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13936822341.602950%
B13936876945.520636%
C13936813370.959331%
D13936738092.733072%

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 161019 139372 0 0 0.00% 0.00%
B 161019 139370 146 146 0.09% 0.10%
C 161019 139372 2 2 0.00% 0.00%
D 161019 139368 599 599 0.37% 0.43%

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 1 162 1104819 719.65 7056 6927 1525.6
A 8 15 356291 229.0 7056 6927 1525.6
A 13 252 188555 119.05 7056 6927 1525.6
B 4 239 8836448 6733.03 6948 6758 1311.4
B 3 64 3737522 2844.87 6948 6758 1311.4
B 15 204 3278277 2494.68 6948 6758 1311.4
C 7 238 60893 36.38 6827 6728 1489.0
C 0 10 45778 26.23 6827 6728 1489.0
C 13 61 41369 23.27 6827 6728 1489.0
D 1 52 7339506 4650.3 6813 6559 1576.9
D 8 195 1494336 943.5 6813 6559 1576.9
D 13 122 1293800 816.32 6813 6559 1576.9

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