ASTROSAT CZTI

Data Quality Report

Orbit 20190305_A05_075T07_9000002760_level2

Creation date: 2019-03-07T12:33:40.886127
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/AS1A05_075T07_9000002760cztM0_level2_bc.evt modeM0/AS1A05_075T07_9000002760cztM0_level2_quad_clean.evt
Size (bytes)1,584,555,840505,442,880
Size1.5 GB 482.0 MB
Events in quadrant A8,798,2353,124,729
Events in quadrant B8,493,4943,220,682
Events in quadrant C9,933,1783,100,558
Events in quadrant D17,884,7042,966,553

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0892000
B0872350
C0948440
D01213380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08560
B08560
C08560
D08560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A421777891.870688%
B421776621.569576%
C4217714033.326458%
D4217735688.459587%

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 45632 42176 14 14 0.03% 0.03%
B 45632 42176 4 4 0.01% 0.01%
C 45632 42176 42 42 0.09% 0.10%
D 45632 42176 533 533 1.17% 1.26%

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 13 411415 877.4 2112 2068 466.5
A 14 111 192825 408.87 2112 2068 466.5
A 13 254 63487 131.65 2112 2068 466.5
B 0 190 72550 171.02 2153 2094 412.0
B 0 198 42846 98.92 2153 2094 412.0
B 0 229 26075 58.21 2153 2094 412.0
C 9 54 1502777 3084.01 2059 2041 486.6
C 4 254 467506 956.53 2059 2041 486.6
C 3 233 32405 62.4 2059 2041 486.6
D 1 52 5224139 11050.76 2038 1966 472.6
D 7 238 4228036 8942.89 2038 1966 472.6
D 10 50 305414 642.13 2038 1966 472.6

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