ASTROSAT CZTI

Data Quality Report

Orbit 20191023_A07_153T02_9000003250_level2

Creation date: 2019-10-25T11:11:10.447806
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/AS1A07_153T02_9000003250cztM0_level2_bc.evt modeM0/AS1A07_153T02_9000003250cztM0_level2_quad_clean.evt
Size (bytes)4,091,690,8801,426,608,000
Size3.8 GB 1.3 GB
Events in quadrant A23,400,9199,319,852
Events in quadrant B25,362,0339,433,461
Events in quadrant C22,020,0958,895,286
Events in quadrant D46,123,6818,504,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021020
B021020
C021020
D021020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02191460
B02264520
C02180060
D03015420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10298512551.218624%
B10298518471.793465%
C10298518841.829393%
D10298567906.593193%

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 122545 102975 2 2 0.00% 0.00%
B 122545 102969 77 77 0.06% 0.07%
C 122545 102971 0 0 0.00% 0.00%
D 122545 102976 1570 1570 1.28% 1.52%

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 15 236 416322 326.2 5914 5831 1258.4
A 13 254 167235 128.26 5914 5831 1258.4
A 3 1 133328 101.32 5914 5831 1258.4
B 3 64 1259005 1149.91 5941 5824 1089.8
B 0 230 551502 500.71 5941 5824 1089.8
B 0 190 214683 191.65 5941 5824 1089.8
C 0 239 160410 117.26 5641 5632 1319.9
C 0 10 106063 76.09 5641 5632 1319.9
C 9 54 49146 32.97 5641 5632 1319.9
D 7 238 13932600 10792.79 5651 5479 1290.4
D 1 52 7567557 5860.22 5651 5479 1290.4
D 11 176 950832 732.6 5651 5479 1290.4

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