ASTROSAT CZTI

Data Quality Report

Orbit 26716

Creation date: 2024-06-27T19:32:04.382593
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/AS1T03_223T01_9000003850_26716cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26716cztM0_level2_quad_clean.evt
Size (bytes)363,216,96052,770,240
Size346.4 MB 50.3 MB
Events in quadrant A2,281,360328,793
Events in quadrant B3,448,461319,561
Events in quadrant C2,178,086325,064
Events in quadrant D2,784,184306,250

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094570
B0130570
C091480
D0112270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4405461.044268%
B43493467.955852%
C4416531.200181%
D4366801.832341%

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 7707 4640 10 10 0.13% 0.22%
B 7689 4553 190 190 2.47% 4.17%
C 7685 4643 1 1 0.01% 0.02%
D 7687 4601 29 29 0.38% 0.63%

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 128987 1145.01 556 543 112.2
A 13 254 7894 65.53 556 543 112.2
A 3 137 5091 40.54 556 543 112.2
B 0 189 913276 8923.97 531 518 102.3
B 10 246 446456 4359.9 531 518 102.3
B 12 111 12198 114.19 531 518 102.3
C 14 238 85928 683.04 532 534 125.0
C 3 233 12871 98.68 532 534 125.0
C 15 208 5997 43.7 532 534 125.0
D 1 52 610216 4235.98 523 511 143.9
D 2 250 91747 633.87 523 511 143.9
D 12 233 54854 377.55 523 511 143.9

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