ASTROSAT CZTI

Data Quality Report

Orbit 37069

Creation date: 2024-06-27T21:35:09.413026
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_138T04_9000005282_37069cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37069cztM0_level2_quad_clean.evt
Size (bytes)513,336,96070,617,600
Size489.6 MB 67.3 MB
Events in quadrant A2,991,631451,243
Events in quadrant B4,684,987439,749
Events in quadrant C2,912,417442,744
Events in quadrant D4,582,184417,170

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120983
B0174912
C0117822
D0172712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536160.289017%
B553665211.777457%
C5536390.704480%
D55363336.015173%

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 7330 5537 5 5 0.07% 0.09%
B 7330 5537 501 501 6.83% 9.05%
C 7330 5537 31 31 0.42% 0.56%
D 7330 5537 291 291 3.97% 5.26%

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 269817 1980.79 674 662 135.9
A 7 3 89437 653.32 674 662 135.9
A 9 143 15993 112.83 674 662 135.9
B 5 184 1826450 15102.56 632 618 120.9
B 0 229 178550 1471.78 632 618 120.9
B 5 172 116585 959.23 632 618 120.9
C 15 214 238417 1582.6 646 649 150.2
C 0 10 145111 961.55 646 649 150.2
C 0 207 6624 39.77 646 649 150.2
D 12 17 731231 4725.1 641 624 154.6
D 1 47 343677 2218.65 641 624 154.6
D 1 52 241397 1557.17 641 624 154.6

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