ASTROSAT CZTI

Data Quality Report

Orbit 42631

Creation date: 2024-06-27T22:42:25.489641
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/AS1A05_174T01_9000005820_42631cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42631cztM0_level2_quad_clean.evt
Size (bytes)348,477,12093,608,640
Size332.3 MB 89.3 MB
Events in quadrant A2,950,376629,900
Events in quadrant B2,838,847646,914
Events in quadrant C2,824,946622,640
Events in quadrant D3,852,077545,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121102
B0121572
C0117582
D0152872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5562120.215750%
B5562761.366415%
C5562260.467458%
D55623746.724200%

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 7386 5563 2 2 0.03% 0.04%
B 7386 5563 64 64 0.87% 1.15%
C 7386 5563 23 23 0.31% 0.41%
D 7386 5563 314 314 4.25% 5.64%

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 555266 4341.67 617 604 127.8
A 13 254 7156 51.29 617 604 127.8
A 3 137 6657 47.38 617 604 127.8
B 5 255 345023 2899.29 613 595 118.8
B 0 245 60690 505.86 613 595 118.8
B 7 202 15572 126.07 613 595 118.8
C 15 214 232481 1620.9 612 617 143.0
C 14 254 194322 1354.14 612 617 143.0
C 13 61 4091 24.29 612 617 143.0
D 12 6 1204220 8303.56 594 579 145.0
D 13 249 206649 1421.62 594 579 145.0
D 1 47 57511 392.76 594 579 145.0

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