ASTROSAT CZTI

Data Quality Report

Orbit 20211121_A11_047T10_9000004778_level2

Creation date: 2021-11-24T11:23:11.380429
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_047T10_9000004778cztM0_level2_bc.evt modeM0/AS1A11_047T10_9000004778cztM0_level2_quad_clean.evt
Size (bytes)4,975,485,1201,233,555,840
Size4.6 GB 1.1 GB
Events in quadrant A30,923,1797,824,612
Events in quadrant B34,830,8857,916,139
Events in quadrant C23,618,8947,946,404
Events in quadrant D55,189,3467,498,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02452780
B02561070
C01963210
D03086290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018400
B018420
C018420
D018440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03290
B03290
C03290
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9011274518.268599%
B9010775418.368939%
C901067460.827914%
D9009254786.080451%

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 123321 90142 201 201 0.16% 0.22%
B 123321 90125 357 357 0.29% 0.40%
C 123321 90138 82 82 0.07% 0.09%
D 123321 90120 692 692 0.56% 0.77%

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 15 169 12652719 12313.14 4643 4580 1027.2
A 13 6 162687 153.92 4643 4580 1027.2
A 13 254 147452 139.09 4643 4580 1027.2
B 5 172 11549545 12762.65 4563 4467 904.6
B 0 219 2007953 2214.78 4563 4467 904.6
B 5 200 1096008 1206.66 4563 4467 904.6
C 15 214 1458195 1394.54 4590 4560 1042.4
C 10 49 1443519 1380.46 4590 4560 1042.4
C 0 10 1215313 1161.53 4590 4560 1042.4
D 8 195 21934822 17974.11 4539 4435 1220.1
D 12 218 3375306 2762.76 4539 4435 1220.1
D 2 250 3214643 2631.08 4539 4435 1220.1

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