ASTROSAT CZTI

Data Quality Report

Orbit 16545

Creation date: 2024-06-27T17:24:12.616946
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_018T01_9000002442_16545cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16545cztM0_level2_quad_clean.evt
Size (bytes)575,956,80077,964,480
Size549.3 MB 74.4 MB
Events in quadrant A3,028,512490,425
Events in quadrant B3,552,543503,343
Events in quadrant C4,893,099481,331
Events in quadrant D5,548,742452,153

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128493
B0144192
C0184662
D0207382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211130.209306%
B6211791.271937%
C62114316.939301%
D62111582.543874%

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 7511 6212 0 0 0.00% 0.00%
B 7512 6212 20 20 0.27% 0.32%
C 7511 6211 305 305 4.06% 4.91%
D 7512 6213 70 70 0.93% 1.13%

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 3 1 11026 65.1 782 766 157.6
A 15 174 8529 49.26 782 766 157.6
A 0 226 6785 38.19 782 766 157.6
B 15 35 160694 1074.74 792 772 148.8
B 0 229 84382 561.89 792 772 148.8
B 7 220 56660 375.59 792 772 148.8
C 3 233 1854131 10666.7 747 754 173.8
C 14 238 115871 662.53 747 754 173.8
C 7 247 9175 48.47 747 754 173.8
D 1 52 2535714 13928.42 749 726 182.0
D 2 33 60445 328.12 749 726 182.0
D 10 199 31815 170.82 749 726 182.0

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