ASTROSAT CZTI

Data Quality Report

Orbit 24808

Creation date: 2024-06-27T19:10:06.597716
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_197T01_9000003626_24808cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24808cztM0_level2_quad_clean.evt
Size (bytes)464,616,000107,467,200
Size443.1 MB 102.5 MB
Events in quadrant A3,327,419714,257
Events in quadrant B3,523,033723,017
Events in quadrant C3,364,745684,198
Events in quadrant D3,409,246674,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137652
B0144542
C0139393
D0142062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6579260.395197%
B6579600.911993%
C6578701.064153%
D6578220.334448%

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 7824 6580 0 0 0.00% 0.00%
B 7824 6580 3 3 0.04% 0.05%
C 7823 6579 0 0 0.00% 0.00%
D 7823 6579 2 2 0.03% 0.03%

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 10688 57.3 863 851 171.7
A 0 226 7392 38.1 863 851 171.7
A 3 137 7355 37.89 863 851 171.7
B 3 64 150679 939.7 853 833 159.5
B 12 111 19064 114.33 853 833 159.5
B 11 111 17296 103.24 853 833 159.5
C 14 238 131733 697.12 814 823 187.8
C 2 16 30974 160.56 814 823 187.8
C 10 218 12858 64.09 814 823 187.8
D 8 195 258205 1313.22 825 802 196.0
D 1 52 25938 128.24 825 802 196.0
D 2 234 21954 107.91 825 802 196.0

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