ASTROSAT CZTI

Data Quality Report

Orbit 20170419_A03_106T01_9000001190_level2

Creation date: 2017-09-23T19:10:21.818810
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/AS1A03_106T01_9000001190cztM0_level2.evt modeM0/AS1A03_106T01_9000001190cztM0_level2_quad_clean.evt
Size (bytes)1,463,664,960332,337,600
Size1.4 GB 316.9 MB
Events in quadrant A10,506,4532,142,518
Events in quadrant B11,031,0022,196,626
Events in quadrant C10,201,7562,171,211
Events in quadrant D11,130,5402,071,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451740
B0462230
C0445830
D0477310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215531610.746996%
B215562000.927816%
C215561320.612359%
D215541600.742322%

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 27521 21561 17 17 0.06% 0.08%
B 27521 21561 38 38 0.14% 0.18%
C 27521 21561 36 36 0.13% 0.17%
D 27521 21560 67 67 0.24% 0.31%

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 15 236 245072 469.25 2613 2566 516.8
A 14 111 54531 100.55 2613 2566 516.8
A 15 223 54147 99.81 2613 2566 516.8
B 0 214 354174 729.18 2634 2570 482.2
B 4 81 175235 358.08 2634 2570 482.2
B 10 16 135890 276.49 2634 2570 482.2
C 12 4 156762 266.28 2561 2575 579.0
C 13 255 25756 40.03 2561 2575 579.0
C 13 61 23588 36.29 2561 2575 579.0
D 6 225 505460 824.84 2555 2482 609.8
D 7 71 431457 703.48 2555 2482 609.8
D 12 233 203140 329.06 2555 2482 609.8

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