ASTROSAT CZTI

Data Quality Report

Orbit 37914

Creation date: 2024-06-27T21:46:05.723038
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/AS1T05_059T01_9000005354_37914cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37914cztM0_level2_quad_clean.evt
Size (bytes)449,809,92080,688,960
Size429.0 MB 77.0 MB
Events in quadrant A2,730,467532,602
Events in quadrant B3,460,175516,265
Events in quadrant C2,587,491532,709
Events in quadrant D4,488,598494,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112842
B0136471
C0109081
D0168241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243100.190730%
B52432554.863628%
C5243140.267023%
D52434388.353996%

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 7245 5244 4 4 0.06% 0.08%
B 7245 5244 184 184 2.54% 3.51%
C 7245 5244 8 8 0.11% 0.15%
D 7245 5244 442 442 6.10% 8.43%

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 341591 2795.98 601 591 122.0
A 12 189 19940 158.65 601 591 122.0
A 13 6 15207 119.84 601 591 122.0
B 5 172 806411 7276.02 580 566 110.8
B 0 229 108516 974.69 580 566 110.8
B 0 230 104469 938.15 580 566 110.8
C 15 214 224206 1685.66 574 579 132.7
C 0 10 69664 520.75 574 579 132.7
C 14 254 34480 255.54 574 579 132.7
D 12 227 869029 6260.1 563 548 138.7
D 1 52 613616 4419.06 563 548 138.7
D 2 250 256809 1847.15 563 548 138.7

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