ASTROSAT CZTI

Data Quality Report

Orbit 20180122_A04_130T01_9000001856_level2

Creation date: 2018-06-30T13:47:59.809417
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_130T01_9000001856cztM0_level2_bc.evt modeM0/AS1A04_130T01_9000001856cztM0_level2_quad_clean.evt
Size (bytes)1,814,186,880624,896,640
Size1.7 GB 595.9 MB
Events in quadrant A12,101,4223,881,760
Events in quadrant B14,977,3803,850,808
Events in quadrant C10,187,2333,872,040
Events in quadrant D14,105,6103,731,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01179020
B01236010
C01072510
D01185450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010620
B010620
C010620
D010620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5235410932.087711%
B5235425554.880238%
C523544520.863353%
D5235410041.917714%

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 57930 52355 15 15 0.03% 0.03%
B 57930 52351 624 624 1.08% 1.19%
C 57930 52355 0 0 0.00% 0.00%
D 57930 52354 176 176 0.30% 0.34%

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 8 15 1025276 1809.29 2586 2530 565.3
A 1 162 629626 1109.36 2586 2530 565.3
A 0 23 150049 260.97 2586 2530 565.3
B 3 64 2136183 4330.95 2575 2501 492.7
B 4 239 1843987 3737.85 2575 2501 492.7
B 0 230 285076 573.57 2575 2501 492.7
C 3 0 68169 115.69 2571 2531 567.4
C 3 233 20833 32.26 2571 2531 567.4
C 8 128 17967 27.21 2571 2531 567.4
D 1 52 2203322 3659.96 2578 2478 601.3
D 8 195 643900 1066.67 2578 2478 601.3
D 13 104 371186 613.15 2578 2478 601.3

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