ASTROSAT CZTI

Data Quality Report

Orbit 36636

Creation date: 2024-06-27T21:29:31.001124
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/AS1A11_049T03_9000005228_36636cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36636cztM0_level2_quad_clean.evt
Size (bytes)537,756,48056,551,680
Size512.8 MB 53.9 MB
Events in quadrant A2,903,570352,368
Events in quadrant B3,645,411353,079
Events in quadrant C3,978,451340,155
Events in quadrant D5,398,080293,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116093
B0142072
C0151862
D0196692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5329100.187652%
B53291623.039970%
C53292554.785138%
D532958210.921374%

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 7302 5330 3 3 0.04% 0.06%
B 7302 5330 98 98 1.34% 1.84%
C 7302 5330 203 203 2.78% 3.81%
D 7302 5330 538 538 7.37% 10.09%

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 205562 1500.77 687 676 136.5
A 15 223 19801 140.09 687 676 136.5
A 7 192 13127 91.2 687 676 136.5
B 5 200 580585 4553.24 676 659 127.4
B 5 255 311050 2437.01 676 659 127.4
B 0 199 32273 248.21 676 659 127.4
C 14 254 721234 4813.11 654 662 149.7
C 0 10 382928 2553.37 654 662 149.7
C 15 214 224935 1498.05 654 662 149.7
D 12 235 2679678 17291.12 639 621 154.9
D 10 199 51361 327.49 639 621 154.9
D 2 250 44666 284.27 639 621 154.9

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