ASTROSAT CZTI

Data Quality Report

Orbit 20160311_T01_031T01_9000000368_level2

Creation date: 2017-10-31T19:33:12.810945
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/AS1T01_031T01_9000000368cztM0_level2.evt modeM0/AS1T01_031T01_9000000368cztM0_level2_quad_clean.evt
Size (bytes)1,473,526,080269,176,320
Size1.4 GB 256.7 MB
Events in quadrant A10,069,7581,683,669
Events in quadrant B10,265,8851,699,411
Events in quadrant C9,958,5361,656,947
Events in quadrant D12,847,7711,602,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458280
B0461930
C0457140
D0544560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219346232.840339%
B219346452.940640%
C219342841.294793%
D2193410624.841798%

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 22914 21940 0 0 0.00% 0.00%
B 22914 21940 25 25 0.11% 0.11%
C 22914 21940 0 0 0.00% 0.00%
D 22914 21940 520 520 2.27% 2.37%

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 130351 243.47 2563 2499 525.1
A 3 1 46741 84.25 2563 2499 525.1
A 12 194 28935 50.34 2563 2499 525.1
B 10 244 89353 173.68 2593 2523 499.9
B 5 172 68881 132.73 2593 2523 499.9
B 12 111 34775 64.51 2593 2523 499.9
C 2 53 46377 74.73 2498 2507 587.1
C 10 65 40024 63.91 2498 2507 587.1
C 8 112 33484 52.77 2498 2507 587.1
D 13 53 1287521 2213.5 2439 2382 580.6
D 7 67 883897 1518.31 2439 2382 580.6
D 13 169 503291 862.76 2439 2382 580.6

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