ASTROSAT CZTI

Data Quality Report

Orbit 38828

Creation date: 2024-06-27T21:56:58.594456
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/AS1A12_083T02_9000005404_38828cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38828cztM0_level2_quad_clean.evt
Size (bytes)401,322,24090,835,200
Size382.7 MB 86.6 MB
Events in quadrant A3,270,717619,018
Events in quadrant B2,850,600637,729
Events in quadrant C2,591,298603,231
Events in quadrant D5,705,751496,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130923
B0124982
C0113442
D0209732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5621711.263120%
B5621310.551503%
C562130.053371%
D562178914.036648%

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 7113 5622 53 53 0.75% 0.94%
B 7113 5622 16 16 0.22% 0.28%
C 7113 5622 2 2 0.03% 0.04%
D 7113 5622 705 705 9.91% 12.54%

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 13 248 473848 3841.92 609 597 123.2
A 10 83 423133 3430.21 609 597 123.2
A 13 254 10088 77.05 609 597 123.2
B 5 200 367522 3110.89 604 588 118.0
B 4 81 32739 272.58 604 588 118.0
B 5 172 22054 181.99 604 588 118.0
C 15 214 239813 1727.27 593 597 138.5
C 15 208 19921 139.53 593 597 138.5
C 2 16 5435 34.93 593 597 138.5
D 12 227 2020748 14656.8 563 545 137.8
D 5 222 507727 3679.66 563 545 137.8
D 2 249 472690 3425.46 563 545 137.8

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