ASTROSAT CZTI

Data Quality Report

Orbit 20170408_G07_065T02_9000001150_level2

Creation date: 2017-09-23T16:10:06.202773
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/AS1G07_065T02_9000001150cztM0_level2.evt modeM0/AS1G07_065T02_9000001150cztM0_level2_quad_clean.evt
Size (bytes)1,713,545,280352,641,600
Size1.6 GB 336.3 MB
Events in quadrant A11,724,4012,184,365
Events in quadrant B12,739,6502,211,640
Events in quadrant C11,787,0162,156,175
Events in quadrant D13,611,7122,066,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0536430
B0560170
C0540620
D0591200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016380
B016360
C016360
D016380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26492660.249132%
B265161690.637351%
C26507950.358396%
D265002250.849057%

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 29289 26618 0 0 0.00% 0.00%
B 29289 26632 29 29 0.10% 0.11%
C 29289 26626 43 43 0.15% 0.16%
D 29289 26626 158 158 0.54% 0.59%

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 0 254 33447 49.72 3036 2963 613.1
A 0 226 28433 41.54 3036 2963 613.1
A 12 194 27385 39.83 3036 2963 613.1
B 0 214 369977 636.19 3065 2983 576.9
B 11 51 149504 254.0 3065 2983 576.9
B 10 16 108418 182.77 3065 2983 576.9
C 9 54 225528 325.28 2964 2967 684.2
C 13 61 22623 28.73 2964 2967 684.2
C 3 202 7428 6.52 2964 2967 684.2
D 1 52 1277489 1672.39 2932 2859 762.2
D 13 105 312966 406.88 2932 2859 762.2
D 2 152 198519 256.72 2932 2859 762.2

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