ASTROSAT CZTI

Data Quality Report

Orbit 37399

Creation date: 2024-06-27T21:39:29.961408
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/AS1C07_001T01_9000005320_37399cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37399cztM0_level2_quad_clean.evt
Size (bytes)2,305,307,520443,816,640
Size2.1 GB 423.3 MB
Events in quadrant A12,653,4553,034,631
Events in quadrant B13,516,9073,018,100
Events in quadrant C13,732,8622,968,568
Events in quadrant D28,219,4492,689,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05140
C05140
D05140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540006
B0570435
C0566145
D01012615

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25166980.389414%
B251664101.629182%
C251663481.382818%
D25166411316.343479%

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 32122 25171 65 65 0.20% 0.26%
B 32122 25171 269 269 0.84% 1.07%
C 32122 25171 310 310 0.97% 1.23%
D 32122 25171 3961 3961 12.33% 15.74%

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 10 83 1139911 2064.05 2763 2707 551.0
A 9 143 256925 461.41 2763 2707 551.0
A 2 79 218477 391.63 2763 2707 551.0
B 5 172 611696 1182.09 2734 2657 515.2
B 0 213 474475 915.75 2734 2657 515.2
B 4 171 359878 693.33 2734 2657 515.2
C 1 23 1430415 2315.37 2678 2698 616.6
C 15 214 1049029 1696.86 2678 2698 616.6
C 14 254 436182 702.99 2678 2698 616.6
D 12 235 12741561 20681.0 2553 2479 616.0
D 12 227 1270791 2059.01 2553 2479 616.0
D 13 249 1150627 1863.94 2553 2479 616.0

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