ASTROSAT CZTI

Data Quality Report

Orbit 11685

Creation date: 2024-06-27T16:16:55.030340
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/AS1A04_227T01_9000001724_11685cztM0_level2.evt modeM0/AS1A04_227T01_9000001724_11685cztM0_level2_quad_clean.evt
Size (bytes)357,163,20034,672,320
Size340.6 MB 33.1 MB
Events in quadrant A2,964,061190,150
Events in quadrant B2,447,800194,437
Events in quadrant C2,007,562202,485
Events in quadrant D3,131,340186,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115202
B096761
C084351
D0118861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39113669.358220%
B39113458.821273%
C3911912.326771%
D39112195.599591%

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 3952 3913 44 44 1.11% 1.12%
B 3952 3913 34 34 0.86% 0.87%
C 3952 3913 0 0 0.00% 0.00%
D 3952 3913 82 82 2.07% 2.10%

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 8 5 699744 6516.97 510 497 107.3
A 1 162 116138 1077.77 510 497 107.3
A 1 178 62698 579.71 510 497 107.3
B 4 239 333237 3241.42 511 498 102.7
B 15 204 54973 530.68 511 498 102.7
B 3 64 15089 142.14 511 498 102.7
C 8 112 18845 151.49 509 511 121.0
C 13 61 3855 27.63 509 511 121.0
C 8 128 3693 26.29 509 511 121.0
D 13 152 684310 5563.36 501 486 122.9
D 7 80 316609 2571.87 501 486 122.9
D 1 52 102639 831.08 501 486 122.9

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