ASTROSAT CZTI

Data Quality Report

Orbit 20170125_A02_176T01_9000000980_level2

Creation date: 2017-09-22T23:01:39.063431
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/AS1A02_176T01_9000000980cztM0_level2.evt modeM0/AS1A02_176T01_9000000980cztM0_level2_quad_clean.evt
Size (bytes)4,272,217,9201,067,405,760
Size4.0 GB 1018.0 MB
Events in quadrant A27,710,5537,113,134
Events in quadrant B29,554,7427,271,604
Events in quadrant C26,601,6507,128,138
Events in quadrant D41,431,1016,666,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012340
B012340
C012340
D012340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01254550
B01283300
C01235280
D01645840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6055312582.077519%
B6055311071.828151%
C605537191.187390%
D6055325334.183112%

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 68419 60557 34 34 0.05% 0.06%
B 68419 60558 45 45 0.07% 0.07%
C 68419 60562 2 2 0.00% 0.00%
D 68419 60559 1355 1355 1.98% 2.24%

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 14 111 488931 343.94 6941 6781 1401.9
A 8 15 127061 85.8 6941 6781 1401.9
A 13 248 119736 80.58 6941 6781 1401.9
B 0 214 819658 616.62 7041 6869 1318.1
B 0 219 589379 441.92 7041 6869 1318.1
B 4 81 365362 271.97 7041 6869 1318.1
C 13 61 53534 29.97 6790 6793 1559.6
C 8 128 41110 22.0 6790 6793 1559.6
C 8 112 26476 12.62 6790 6793 1559.6
D 8 195 5856135 3587.53 6690 6462 1630.6
D 2 216 5507751 3373.87 6690 6462 1630.6
D 14 34 2567814 1570.85 6690 6462 1630.6

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