ASTROSAT CZTI

Data Quality Report

Orbit 20190517_A05_101T10_9000002924_level2

Creation date: 2019-05-20T11:43:43.183550
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_101T10_9000002924cztM0_level2_bc.evt modeM0/AS1A05_101T10_9000002924cztM0_level2_quad_clean.evt
Size (bytes)428,650,560194,616,000
Size408.8 MB 185.6 MB
Events in quadrant A2,379,6901,322,308
Events in quadrant B2,406,5831,336,349
Events in quadrant C2,010,0981,307,792
Events in quadrant D5,459,2211,197,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225290
B0225120
C0215850
D0344370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105552352.226433%
B105552142.027475%
C105552522.387494%
D10555163615.499763%

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 12000 10554 14 14 0.12% 0.13%
B 12000 10554 2 2 0.02% 0.02%
C 12000 10553 0 0 0.00% 0.00%
D 12000 10552 227 227 1.89% 2.15%

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 9 143 192478 1633.44 529 518 117.5
A 5 16 134647 1141.34 529 518 117.5
A 13 254 7397 58.54 529 518 117.5
B 3 112 207424 2014.65 531 519 102.7
B 4 216 30490 291.83 531 519 102.7
B 7 220 27213 259.92 531 519 102.7
C 3 233 14534 111.81 517 512 125.4
C 9 221 7421 55.09 517 512 125.4
C 13 61 3136 20.92 517 512 125.4
D 7 238 1817517 15156.3 499 480 119.9
D 1 52 917145 7646.1 499 480 119.9
D 1 20 632334 5270.43 499 480 119.9

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