ASTROSAT CZTI

Data Quality Report

Orbit 13876

Creation date: 2024-06-27T16:47:29.972062
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/AS1G08_030T01_9000002044_13876cztM0_level2.evt modeM0/AS1G08_030T01_9000002044_13876cztM0_level2_quad_clean.evt
Size (bytes)973,535,040153,345,600
Size928.4 MB 146.2 MB
Events in quadrant A6,215,253949,598
Events in quadrant B6,647,714924,548
Events in quadrant C6,139,571962,044
Events in quadrant D9,614,677922,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265804
B0277303
C0263993
D0370443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128051911.491605%
B128052341.827411%
C128051531.194846%
D128059567.465834%

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 15416 12806 1 1 0.01% 0.01%
B 15416 12806 31 31 0.20% 0.24%
C 15416 12806 0 0 0.00% 0.00%
D 15416 12806 652 652 4.23% 5.09%

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 4 2 34624 103.1 1590 1560 320.7
A 0 23 29532 87.22 1590 1560 320.7
A 1 162 25400 74.34 1590 1560 320.7
B 10 245 142071 468.67 1573 1535 299.9
B 10 244 84501 276.68 1573 1535 299.9
B 3 209 69005 225.0 1573 1535 299.9
C 3 233 89387 242.49 1550 1560 362.2
C 13 61 11145 26.46 1550 1560 362.2
C 12 4 7182 15.52 1550 1560 362.2
D 13 122 2212972 5982.15 1503 1465 369.7
D 5 222 725457 1958.41 1503 1465 369.7
D 1 52 514374 1387.42 1503 1465 369.7

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