ASTROSAT CZTI

Data Quality Report

Orbit 20170402_A03_036T01_9000001128_level2

Creation date: 2017-09-23T14:26:13.476405
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_036T01_9000001128cztM0_level2.evt modeM0/AS1A03_036T01_9000001128cztM0_level2_quad_clean.evt
Size (bytes)3,756,144,960701,838,720
Size3.5 GB 669.3 MB
Events in quadrant A25,156,3354,444,197
Events in quadrant B27,892,4464,435,470
Events in quadrant C24,549,9104,403,560
Events in quadrant D32,406,2994,164,125

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01134620
B01203930
C01130530
D01357230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011340
B011340
C011340
D011340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555364510.812086%
B5553511482.067165%
C555363650.657231%
D5553620373.667891%

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 62546 55546 1 1 0.00% 0.00%
B 62546 55545 485 485 0.78% 0.87%
C 62546 55547 0 0 0.00% 0.00%
D 62546 55545 1348 1348 2.16% 2.43%

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 8 15 220791 163.67 6460 6317 1310.4
A 0 226 61300 41.96 6460 6317 1310.4
A 13 14 60041 41.0 6460 6317 1310.4
B 0 213 1174467 968.63 6432 6275 1206.0
B 10 16 539864 442.44 6432 6275 1206.0
B 0 214 535465 438.79 6432 6275 1206.0
C 13 61 47943 28.79 6292 6311 1445.9
C 3 202 15636 6.45 6292 6311 1445.9
C 1 3 15518 6.37 6292 6311 1445.9
D 13 122 1792044 1076.01 6156 6024 1659.9
D 6 6 1725544 1035.95 6156 6024 1659.9
D 1 52 1717921 1031.35 6156 6024 1659.9

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