ASTROSAT CZTI

Data Quality Report

Orbit 35566

Creation date: 2022-04-27T05:29:23.066435
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/AS1T05_026T01_9000005092_35566cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35566cztM0_level2_quad_clean.evt
Size (bytes)395,547,84078,736,320
Size377.2 MB 75.1 MB
Events in quadrant A2,918,937497,501
Events in quadrant B2,731,534525,231
Events in quadrant C3,276,032520,834
Events in quadrant D2,723,729501,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118983
B0111362
C0127452
D0111112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4836130.268817%
B4836661.364764%
C48362094.321754%
D4836350.723739%

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 6958 4837 0 0 0.00% 0.00%
B 6958 4837 39 39 0.56% 0.81%
C 6958 4837 141 141 2.03% 2.92%
D 6958 4837 31 31 0.45% 0.64%

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 523024 4548.46 576 565 114.9
A 10 83 129548 1122.91 576 565 114.9
A 7 192 28877 246.48 576 565 114.9
B 5 172 304304 2802.49 586 571 108.4
B 4 81 41039 373.39 586 571 108.4
B 5 200 34858 316.36 586 571 108.4
C 0 10 736762 5637.1 574 582 130.6
C 15 214 212701 1624.24 574 582 130.6
C 9 187 33201 249.77 574 582 130.6
D 8 195 163271 1185.09 573 560 137.3
D 13 249 135193 980.59 573 560 137.3
D 2 250 51149 368.46 573 560 137.3

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