ASTROSAT CZTI

Data Quality Report

Orbit 35102

Creation date: 2022-03-31T13:36:41.599551
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_015T01_9000005026_35102cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35102cztM0_level2_quad_clean.evt
Size (bytes)556,165,44059,901,120
Size530.4 MB 57.1 MB
Events in quadrant A3,055,829369,449
Events in quadrant B3,199,001372,502
Events in quadrant C3,295,411368,903
Events in quadrant D6,942,065338,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124133
B0128942
C0131392
D0242522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5204370.710992%
B5204480.922367%
C52041252.401998%
D52043576.860108%

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 7266 5205 22 22 0.30% 0.42%
B 7266 5205 21 21 0.29% 0.40%
C 7266 5205 83 83 1.14% 1.59%
D 7266 5205 262 262 3.61% 5.03%

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 15 174 202064 1435.04 714 704 140.3
A 10 83 81888 578.58 714 704 140.3
A 13 254 9465 62.44 714 704 140.3
B 5 172 204311 1542.46 705 692 132.0
B 5 255 86462 649.73 705 692 132.0
B 0 190 67716 507.72 705 692 132.0
C 0 10 307159 1962.63 687 695 156.1
C 15 214 215338 1374.59 687 695 156.1
C 14 67 38725 243.55 687 695 156.1
D 8 195 3664906 22306.7 683 666 164.3
D 13 249 186055 1128.59 683 666 164.3
D 7 80 128451 777.91 683 666 164.3

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