ASTROSAT CZTI

Data Quality Report

Orbit 20200218_C05_007T01_9000003518_level2

Creation date: 2020-02-20T12:45:35.109971
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/AS1C05_007T01_9000003518cztM0_level2_bc.evt modeM0/AS1C05_007T01_9000003518cztM0_level2_quad_clean.evt
Size (bytes)2,023,634,880601,637,760
Size1.9 GB 573.8 MB
Events in quadrant A10,146,4483,719,320
Events in quadrant B13,075,1493,770,389
Events in quadrant C11,168,9293,678,361
Events in quadrant D23,411,5113,546,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010420
B010420
C010420
D010420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01052210
B01161440
C01088180
D01455810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511127051.379324%
B5111217353.394506%
C5111211902.328220%
D5111220433.997104%

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 56897 51109 0 0 0.00% 0.00%
B 56897 51104 39 39 0.07% 0.08%
C 56897 51105 52 52 0.09% 0.10%
D 56897 51107 572 572 1.01% 1.12%

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 13 254 85231 144.8 2620 2566 570.9
A 0 226 16823 24.97 2620 2566 570.9
A 12 194 16188 23.86 2620 2566 570.9
B 3 64 2081374 4180.86 2640 2569 497.2
B 0 189 229161 455.72 2640 2569 497.2
B 0 229 198995 395.05 2640 2569 497.2
C 10 9 681281 1120.78 2580 2564 605.6
C 7 247 259481 424.25 2580 2564 605.6
C 10 91 207226 337.96 2580 2564 605.6
D 1 52 7584275 12496.49 2594 2503 606.7
D 8 195 4767102 7853.14 2594 2503 606.7
D 12 233 357907 585.79 2594 2503 606.7

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