ASTROSAT CZTI

Data Quality Report

Orbit 17981

Creation date: 2024-06-27T17:43:27.015867
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/AS1A05_108T02_9000002676_17981cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17981cztM0_level2_quad_clean.evt
Size (bytes)641,286,72097,663,680
Size611.6 MB 93.1 MB
Events in quadrant A7,024,907575,439
Events in quadrant B3,792,558636,751
Events in quadrant C3,753,792613,294
Events in quadrant D4,340,406608,063

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257972
B0163842
C0160413
D0181542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A752291212.124435%
B75231051.395720%
C75221121.488966%
D75221251.661792%

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 8767 7524 648 648 7.39% 8.61%
B 8768 7525 10 10 0.11% 0.13%
C 8767 7524 1 1 0.01% 0.01%
D 8767 7524 56 56 0.64% 0.74%

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 14 237 3486104 19405.98 878 860 179.6
A 15 174 152382 843.68 878 860 179.6
A 4 2 12544 65.06 878 860 179.6
B 7 220 86156 481.63 915 894 177.0
B 5 172 31094 170.59 915 894 177.0
B 0 197 25672 139.97 915 894 177.0
C 3 233 182297 878.26 878 884 206.6
C 14 238 134935 648.97 878 884 206.6
C 0 207 8614 37.42 878 884 206.6
D 5 222 697281 3068.22 883 862 227.0
D 7 238 110136 481.43 883 862 227.0
D 11 176 93971 410.21 883 862 227.0

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