ASTROSAT CZTI

Data Quality Report

Orbit 20181014_C04_007T02_9000002432_level2

Creation date: 2018-10-15T10:45:11.365512
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/AS1C04_007T02_9000002432cztM0_level2_bc.evt modeM0/AS1C04_007T02_9000002432cztM0_level2_quad_clean.evt
Size (bytes)364,970,880134,256,960
Size348.1 MB 128.0 MB
Events in quadrant A2,440,592847,572
Events in quadrant B2,878,875858,895
Events in quadrant C2,238,798824,278
Events in quadrant D2,767,250803,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230320
B0251430
C0222230
D0240410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105523643.449583%
B105523913.705459%
C105523203.032600%
D105523723.525398%

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 11058 10552 9 9 0.08% 0.09%
B 11058 10551 1 1 0.01% 0.01%
C 11058 10550 0 0 0.00% 0.00%
D 11058 10551 16 16 0.14% 0.15%

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 15 174 333420 2666.86 546 533 124.8
A 13 248 6555 48.24 546 533 124.8
A 12 194 3573 24.35 546 533 124.8
B 15 35 439312 3943.26 551 537 111.3
B 4 173 71169 634.77 551 537 111.3
B 0 198 63741 568.01 551 537 111.3
C 3 233 170477 1344.93 526 522 126.4
C 0 207 19183 147.67 526 522 126.4
C 8 128 9889 74.13 526 522 126.4
D 2 33 259179 2006.52 534 513 128.9
D 1 52 228804 1770.89 534 513 128.9
D 5 222 133288 1029.96 534 513 128.9

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