ASTROSAT CZTI

Data Quality Report

Orbit 27999

Creation date: 2024-06-27T19:46:55.012824
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/AS1A10_021T08_9000004042_27999cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_27999cztM0_level2_quad_clean.evt
Size (bytes)300,490,56032,166,720
Size286.6 MB 30.7 MB
Events in quadrant A1,872,059187,870
Events in quadrant B1,888,784192,328
Events in quadrant C1,909,841182,827
Events in quadrant D3,201,637173,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074010
B075820
C076190
D0118180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33381474.403835%
B33382076.201318%
C33382136.381067%
D333852515.727981%

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 3408 3340 0 0 0.00% 0.00%
B 3408 3338 5 5 0.15% 0.15%
C 3408 3339 0 0 0.00% 0.00%
D 3408 3340 377 377 11.06% 11.29%

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 69316 713.32 467 456 96.5
A 3 137 4786 44.85 467 456 96.5
A 13 254 4697 43.93 467 456 96.5
B 10 245 51632 558.32 455 442 91.7
B 0 190 41587 448.76 455 442 91.7
B 12 111 11499 120.6 455 442 91.7
C 2 16 80434 754.23 442 444 106.1
C 14 238 69952 655.4 442 444 106.1
C 3 233 35490 330.45 442 444 106.1
D 1 52 706595 6861.75 425 414 102.9
D 8 195 691131 6711.49 425 414 102.9
D 7 80 136331 1320.66 425 414 102.9

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