ASTROSAT CZTI

Data Quality Report

Orbit 42658

Creation date: 2024-06-27T22:42:43.765303
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_013T01_9000005822_42658cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42658cztM0_level2_quad_clean.evt
Size (bytes)373,320,00087,390,720
Size356.0 MB 83.3 MB
Events in quadrant A2,915,121597,173
Events in quadrant B4,751,858570,953
Events in quadrant C2,524,770577,662
Events in quadrant D3,205,510520,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119172
B0177942
C0109872
D0134412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139781518821416139779710648366
B0-1-1
C0-1-1
D0-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5420220.405904%
B54194878.986898%
C541980.147629%
D54191963.616903%

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 7092 5421 10 10 0.14% 0.18%
B 7091 5420 387 387 5.46% 7.14%
C 7091 5420 1 1 0.01% 0.02%
D 7091 5420 191 191 2.69% 3.52%

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 564293 4571.08 595 583 123.3
A 13 248 33656 268.19 595 583 123.3
A 13 6 9324 70.88 595 583 123.3
B 0 229 1525835 13603.08 574 559 112.1
B 10 246 815661 7269.44 574 559 112.1
B 0 245 76170 674.33 574 559 112.1
C 15 214 227767 1693.81 577 579 134.1
C 14 254 30048 219.71 577 579 134.1
C 3 233 6441 43.7 577 579 134.1
D 2 249 486298 3479.76 565 549 139.6
D 1 52 209031 1493.5 565 549 139.6
D 12 6 100345 714.91 565 549 139.6

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