ASTROSAT CZTI

Data Quality Report

Orbit 20170417_C02_033T01_9000001178_level2

Creation date: 2017-09-23T18:29:47.220184
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/AS1C02_033T01_9000001178cztM0_level2.evt modeM0/AS1C02_033T01_9000001178cztM0_level2_quad_clean.evt
Size (bytes)1,489,982,400250,971,840
Size1.4 GB 239.3 MB
Events in quadrant A10,744,2131,531,033
Events in quadrant B11,459,8321,568,400
Events in quadrant C10,212,1181,547,856
Events in quadrant D11,249,7701,468,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466910
B0480460
C0452180
D0486720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04380
B04380
C04380
D04380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215705632.610107%
B215695722.651954%
C215702251.043115%
D215704492.081595%

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 22531 21576 77 77 0.34% 0.36%
B 22531 21576 28 28 0.12% 0.13%
C 22531 21576 7 7 0.03% 0.03%
D 22531 21574 181 181 0.80% 0.84%

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 5 16 485758 890.1 2644 2579 542.8
A 14 111 66393 117.56 2644 2579 542.8
A 0 254 27112 45.19 2644 2579 542.8
B 0 219 261599 506.48 2670 2605 511.4
B 0 214 217534 420.31 2670 2605 511.4
B 0 231 173574 334.34 2670 2605 511.4
C 1 16 92764 149.4 2579 2590 603.6
C 8 128 30701 46.58 2579 2590 603.6
C 13 61 20020 28.88 2579 2590 603.6
D 7 71 441480 654.68 2541 2478 670.6
D 2 14 268250 396.34 2541 2478 670.6
D 1 7 235760 347.89 2541 2478 670.6

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