ASTROSAT CZTI

Data Quality Report

Orbit 26041

Creation date: 2024-06-27T19:24:09.748626
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/AS1A09_033T02_9000003762_26041cztM0_level2.evt modeM0/AS1A09_033T02_9000003762_26041cztM0_level2_quad_clean.evt
Size (bytes)1,605,723,840264,136,320
Size1.5 GB 251.9 MB
Events in quadrant A10,861,7841,695,838
Events in quadrant B11,121,7231,709,958
Events in quadrant C10,716,9581,602,478
Events in quadrant D14,569,7581,603,644

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437090
B0446440
C0433620
D0558870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201572811.394057%
B201573891.929851%
C201553491.731580%
D2015710675.293446%

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 25362 20157 21 21 0.08% 0.10%
B 25362 20157 58 58 0.23% 0.29%
C 25361 20158 2 2 0.01% 0.01%
D 25362 20158 954 954 3.76% 4.73%

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 0 13 184074 334.26 2771 2726 542.5
A 13 254 28023 46.63 2771 2726 542.5
A 3 137 24191 39.56 2771 2726 542.5
B 10 245 364494 720.94 2699 2642 501.9
B 0 230 70574 135.34 2699 2642 501.9
B 0 229 66786 127.8 2699 2642 501.9
C 14 238 426900 713.14 2591 2610 595.0
C 3 233 181100 300.0 2591 2610 595.0
C 13 61 17753 25.45 2591 2610 595.0
D 1 52 4276832 6699.53 2639 2580 638.0
D 7 223 153319 236.27 2639 2580 638.0
D 13 238 78033 118.27 2639 2580 638.0

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