ASTROSAT CZTI

Data Quality Report

Orbit 24751

Creation date: 2024-06-27T19:09:28.090921
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/AS1A07_018T08_9000003622_24751cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24751cztM0_level2_quad_clean.evt
Size (bytes)434,295,36081,043,200
Size414.2 MB 77.3 MB
Events in quadrant A2,858,186531,687
Events in quadrant B2,965,043536,796
Events in quadrant C3,101,595503,178
Events in quadrant D3,851,358494,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116122
B0119021
C0125241
D0152531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5544450.811688%
B5545631.136159%
C5545761.370604%
D55451472.651037%

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 6824 5545 0 0 0.00% 0.00%
B 6825 5546 7 7 0.10% 0.13%
C 6825 5546 0 0 0.00% 0.00%
D 6825 5546 100 100 1.47% 1.80%

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 13 254 9327 58.56 739 727 146.9
A 0 226 6490 39.24 739 727 146.9
A 4 2 6393 38.58 739 727 146.9
B 3 64 32014 229.6 726 711 136.3
B 15 36 20137 142.49 726 711 136.3
B 0 190 17401 122.42 726 711 136.3
C 7 247 184533 1140.47 693 697 161.2
C 14 238 114996 709.08 693 697 161.2
C 8 222 90202 555.27 693 697 161.2
D 1 52 543182 3208.99 703 684 169.1
D 8 195 484627 2862.62 703 684 169.1
D 7 238 149021 877.44 703 684 169.1

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