ASTROSAT CZTI

Data Quality Report

Orbit 35295

Creation date: 2022-04-08T22:08:13.177470
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_082T01_9000005056_35295cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35295cztM0_level2_quad_clean.evt
Size (bytes)664,577,28066,761,280
Size633.8 MB 63.7 MB
Events in quadrant A2,682,702436,480
Events in quadrant B9,796,232349,399
Events in quadrant C3,381,130428,047
Events in quadrant D3,875,633403,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117933
B0331142
C0134602
D0152512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A577090.155979%
B5770307553.292894%
C57701562.703640%
D57702864.956672%

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 7232 5771 0 0 0.00% 0.00%
B 7232 5771 2563 2563 35.44% 44.41%
C 7232 5771 141 141 1.95% 2.44%
D 7232 5771 273 273 3.77% 4.73%

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 10 83 104550 786.04 659 647 132.2
A 13 6 17542 127.81 659 647 132.2
A 13 254 8982 63.06 659 647 132.2
B 5 172 4405985 46006.12 498 485 95.8
B 5 236 3332444 34795.26 498 485 95.8
B 4 232 62665 649.34 498 485 95.8
C 0 10 614644 4198.48 633 638 146.2
C 15 214 235446 1605.58 633 638 146.2
C 15 159 28931 193.46 633 638 146.2
D 7 80 308447 2001.29 629 612 153.8
D 2 249 252243 1635.9 629 612 153.8
D 10 118 194472 1260.32 629 612 153.8

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