ASTROSAT CZTI

Data Quality Report

Orbit 25982

Creation date: 2024-06-27T19:23:30.268543
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_068T01_9000003760_25982cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25982cztM0_level2_quad_clean.evt
Size (bytes)1,787,791,680373,832,640
Size1.7 GB 356.5 MB
Events in quadrant A10,919,8062,576,197
Events in quadrant B10,852,0132,553,450
Events in quadrant C11,694,8802,417,846
Events in quadrant D19,281,5892,349,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454800
B0453070
C0481420
D0713260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207132811.356636%
B207143361.622091%
C207134932.380148%
D2071419579.447717%

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 25613 20714 0 0 0.00% 0.00%
B 25614 20716 9 9 0.04% 0.04%
C 25614 20716 15 15 0.06% 0.07%
D 25614 20716 1436 1436 5.61% 6.93%

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 10 229 32428 53.25 2827 2780 556.7
A 13 254 30102 49.07 2827 2780 556.7
A 0 226 24354 38.75 2827 2780 556.7
B 0 190 97344 185.17 2745 2691 511.2
B 12 111 61448 114.95 2745 2691 511.2
B 11 111 56004 104.3 2745 2691 511.2
C 3 233 844341 1398.8 2645 2664 601.7
C 14 238 433945 716.75 2645 2664 601.7
C 0 207 84146 135.42 2645 2664 601.7
D 1 52 7401673 11803.48 2666 2610 626.9
D 12 233 1761781 2806.35 2666 2610 626.9
D 2 234 71257 109.51 2666 2610 626.9

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