ASTROSAT CZTI

Data Quality Report

Orbit 28882

Creation date: 2024-06-27T19:57:34.521550
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_123T07_9000004140_28882cztM0_level2.evt modeM0/AS1A10_123T07_9000004140_28882cztM0_level2_quad_clean.evt
Size (bytes)439,139,52053,847,360
Size418.8 MB 51.4 MB
Events in quadrant A2,178,611338,314
Events in quadrant B2,245,924345,134
Events in quadrant C2,731,405325,428
Events in quadrant D5,820,849287,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095810
B097010
C0110440
D0205510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A474130.063278%
B474190.189833%
C47411463.079519%
D4741100321.155874%

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 4741 4741 0 0 0.00% 0.00%
B 4741 4741 2 2 0.04% 0.04%
C 4741 4741 43 43 0.91% 0.91%
D 4741 4741 938 938 19.78% 19.78%

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 12 96 30253 264.92 554 540 112.2
A 13 254 8715 72.89 554 540 112.2
A 3 137 5397 43.3 554 540 112.2
B 10 245 28467 260.96 552 538 107.0
B 15 33 22738 207.43 552 538 107.0
B 15 32 21738 198.08 552 538 107.0
C 15 208 241842 1937.33 526 528 124.6
C 3 233 207918 1664.98 526 528 124.6
C 14 238 113932 910.44 526 528 124.6
D 8 195 2180856 18267.85 491 477 119.4
D 7 80 992156 8308.57 491 477 119.4
D 1 52 741595 6209.3 491 477 119.4

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