ASTROSAT CZTI

Data Quality Report

Orbit 51028

Creation date: 2025-03-05T10:05:04.264105
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_001T02_9000006452_51028cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51028cztM0_level2_quad_clean.evt
Size (bytes)553,501,44093,674,880
Size527.9 MB 89.3 MB
Events in quadrant A5,546,723595,846
Events in quadrant B4,658,352651,339
Events in quadrant C3,962,328607,583
Events in quadrant D5,801,884514,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211242
B0186082
C0165022
D0222112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66965147.676225%
B66964787.138590%
C66961722.568698%
D669683212.425329%

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 7731 6697 367 367 4.75% 5.48%
B 7731 6697 323 323 4.18% 4.82%
C 7731 6697 138 138 1.79% 2.06%
D 7731 6697 670 670 8.67% 10.00%

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 14 238 671778 3971.79 672 655 169.0
A 12 3 657435 3886.91 672 655 169.0
A 14 254 299141 1766.48 672 655 169.0
B 12 32 982256 6844.38 674 650 143.4
B 4 206 240898 1675.16 674 650 143.4
B 4 81 150311 1043.53 674 650 143.4
C 1 44 346490 1875.9 671 666 184.4
C 15 147 316783 1714.76 671 666 184.4
C 12 247 112695 607.69 671 666 184.4
D 2 216 1265450 7185.11 627 604 176.0
D 12 128 723705 4107.66 627 604 176.0
D 12 191 428021 2427.99 627 604 176.0

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