ASTROSAT CZTI

Data Quality Report

Orbit 26136

Creation date: 2024-06-27T19:25:14.130010
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/AS1A09_138T04_9000003776_26136cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26136cztM0_level2_quad_clean.evt
Size (bytes)510,693,12088,784,640
Size487.0 MB 84.7 MB
Events in quadrant A3,691,330561,654
Events in quadrant B3,345,889575,724
Events in quadrant C3,762,532539,732
Events in quadrant D4,207,002539,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152730
B0141480
C0153310
D0170550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771620.915670%
B6771660.974745%
C67711832.702703%
D67711622.392556%

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 7696 6771 0 0 0.00% 0.00%
B 7696 6771 0 0 0.00% 0.00%
C 7696 6771 65 65 0.84% 0.96%
D 7696 6771 80 80 1.04% 1.18%

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 0 13 315255 1851.4 839 822 169.8
A 3 1 138190 808.83 839 822 169.8
A 13 254 11746 64.32 839 822 169.8
B 0 190 32599 198.04 837 814 160.5
B 0 229 20881 125.03 837 814 160.5
B 12 111 19513 116.5 837 814 160.5
C 3 233 273439 1442.5 806 812 189.0
C 2 16 217291 1145.41 806 812 189.0
C 14 238 128197 674.01 806 812 189.0
D 1 52 800283 4123.82 812 792 193.9
D 12 233 265263 1364.16 812 792 193.9
D 8 195 62025 315.84 812 792 193.9

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