ASTROSAT CZTI

Data Quality Report

Orbit 20171208_T01_209T01_9000001758_level2

Creation date: 2018-01-05T15:40:15.643891
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/AS1T01_209T01_9000001758cztM0_level2_bc.evt modeM0/AS1T01_209T01_9000001758cztM0_level2_quad_clean.evt
Size (bytes)2,592,797,7601,061,069,760
Size2.4 GB 1011.9 MB
Events in quadrant A18,575,6426,923,575
Events in quadrant B21,246,1106,980,793
Events in quadrant C13,112,3756,976,664
Events in quadrant D20,963,4316,603,223

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013860
B013860
C013860
D013860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580110
B01695360
C01382680
D01584810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6788318152.673718%
B6788331624.658015%
C678835660.833788%
D6788313171.940103%

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 78929 67889 384 384 0.49% 0.57%
B 78929 67886 23 23 0.03% 0.03%
C 78929 67888 23 23 0.03% 0.03%
D 78929 67887 108 108 0.14% 0.16%

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 7 144 3161656 4308.54 3339 3278 733.1
A 8 15 1205087 1639.46 3339 3278 733.1
A 1 162 586168 795.16 3339 3278 733.1
B 4 239 4858561 7663.32 3355 3271 633.6
B 15 204 978252 1538.86 3355 3271 633.6
B 15 185 457820 717.43 3355 3271 633.6
C 0 207 134350 181.41 3292 3251 722.6
C 1 16 57594 75.2 3292 3251 722.6
C 13 61 20397 23.73 3292 3251 722.6
D 8 195 3329191 4357.0 3282 3168 763.4
D 1 52 1596740 2087.54 3282 3168 763.4
D 12 233 581083 757.05 3282 3168 763.4

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