ASTROSAT CZTI

Data Quality Report

Orbit 02657

Creation date: 2024-06-27T14:20:38.459152
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/AS1P01_010T01_9000000398_02657cztM0_level2.evt modeM0/AS1P01_010T01_9000000398_02657cztM0_level2_quad_clean.evt
Size (bytes)2,355,857,280498,142,080
Size2.2 GB 475.1 MB
Events in quadrant A12,689,0263,340,961
Events in quadrant B13,076,0373,379,594
Events in quadrant C26,892,3453,185,626
Events in quadrant D16,710,8353,163,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05980
B05980
C05980
D05980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0596746
B0603595
C01008505
D0709818

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293544661.587518%
B293544571.556858%
C2935422877.791102%
D293539763.325043%

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 44525 29360 0 0 0.00% 0.00%
B 44525 29360 6 6 0.01% 0.02%
C 44525 29360 985 985 2.21% 3.35%
D 44525 29358 506 506 1.14% 1.72%

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 15 103913 153.24 3254 3176 657.4
A 12 194 36265 50.33 3254 3176 657.4
A 0 226 35818 49.65 3254 3176 657.4
B 15 85 98348 153.91 3291 3203 618.2
B 14 167 78191 121.31 3291 3203 618.2
B 10 244 66558 102.49 3291 3203 618.2
C 9 70 14328934 20164.27 3083 3088 710.5
C 14 223 291660 406.18 3083 3088 710.5
C 8 112 58881 78.53 3083 3088 710.5
D 2 255 1568445 2123.34 3106 3026 737.2
D 2 184 1104141 1493.55 3106 3026 737.2
D 13 223 990234 1339.05 3106 3026 737.2

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