ASTROSAT CZTI

Data Quality Report

Orbit 20128

Creation date: 2024-06-27T18:11:37.189126
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_180T01_9000002992_20128cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20128cztM0_level2_quad_clean.evt
Size (bytes)2,777,512,320414,244,800
Size2.6 GB 395.1 MB
Events in quadrant A26,917,1472,442,752
Events in quadrant B16,074,1692,792,755
Events in quadrant C16,046,5482,687,842
Events in quadrant D23,090,4452,591,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0993085
B0669655
C0661875
D0889065

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05980
B05980
C05980
D05980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29545594320.115079%
B295466452.183037%
C295465972.020578%
D2954621217.178637%

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 32200 29549 3579 3579 11.11% 12.11%
B 32201 29551 333 333 1.03% 1.13%
C 32201 29551 94 94 0.29% 0.32%
D 32201 29551 2053 2053 6.38% 6.95%

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 13863042 21510.28 3198 3140 644.3
A 14 237 375274 577.54 3198 3140 644.3
A 14 254 342620 526.87 3198 3140 644.3
B 10 245 1656143 2437.66 3577 3493 678.0
B 0 183 110013 157.12 3577 3493 678.0
B 0 214 86874 122.99 3577 3493 678.0
C 3 233 1963235 2445.72 3455 3487 801.3
C 14 238 543835 674.34 3455 3487 801.3
C 8 208 46640 53.85 3455 3487 801.3
D 1 52 8602625 10322.7 3439 3350 833.0
D 14 34 912688 1091.58 3439 3350 833.0
D 11 176 175586 206.75 3439 3350 833.0

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