ASTROSAT CZTI

Data Quality Report

Orbit 39072

Creation date: 2024-06-27T22:00:03.789861
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_067T01_9000005432_39072cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39072cztM0_level2_quad_clean.evt
Size (bytes)346,481,28091,290,240
Size330.4 MB 87.1 MB
Events in quadrant A3,020,234626,324
Events in quadrant B2,355,673635,102
Events in quadrant C2,784,734591,438
Events in quadrant D4,259,974546,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122023
B0106162
C0115752
D0163172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5207140.268869%
B5207100.192049%
C5207120.230459%
D5207981.882082%

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 7299 5208 7 7 0.10% 0.13%
B 7299 5208 3 3 0.04% 0.06%
C 7299 5208 12 12 0.16% 0.23%
D 7299 5208 109 109 1.49% 2.09%

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 417546 3514.94 584 573 118.6
A 15 222 272982 2296.31 584 573 118.6
A 12 16 18236 148.89 584 573 118.6
B 5 172 35374 311.03 581 567 111.9
B 0 190 33277 292.29 581 567 111.9
B 12 111 14150 121.38 581 567 111.9
C 15 214 220764 1669.12 561 566 131.9
C 15 208 207048 1565.15 561 566 131.9
C 3 233 155849 1177.06 561 566 131.9
D 12 235 1615276 11954.11 555 538 135.1
D 1 47 341038 2520.77 555 538 135.1
D 2 249 62606 459.5 555 538 135.1

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