ASTROSAT CZTI

Data Quality Report

Orbit 50157

Creation date: 2025-01-05T21:09:24.141716
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/AS1C09_003T01_9000006442_50157cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50157cztM0_level2_quad_clean.evt
Size (bytes)996,203,52061,721,280
Size950.1 MB 58.9 MB
Events in quadrant A9,416,800374,668
Events in quadrant B3,985,964584,617
Events in quadrant C11,096,615241,541
Events in quadrant D11,926,972258,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320661
B0158231
C0370051
D0394491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5840216137.003425%
B58402534.332192%
C5840340758.339041%
D5839332756.978935%

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 6874 5839 1924 1924 27.99% 32.95%
B 6875 5841 155 155 2.25% 2.65%
C 6875 5840 3166 3166 46.05% 54.21%
D 6874 5839 3392 3392 49.35% 58.09%

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 8 8 2190619 16318.22 529 514 134.2
A 9 191 1677340 12493.84 529 514 134.2
A 0 98 1604233 11949.13 529 514 134.2
B 5 185 405390 3174.85 597 578 127.5
B 4 170 312085 2443.08 597 578 127.5
B 4 206 231335 1809.78 597 578 127.5
C 4 111 5761236 53036.51 394 393 108.6
C 15 230 840327 7732.75 394 393 108.6
C 15 147 673272 6194.78 394 393 108.6
D 15 185 2747429 20304.79 470 456 135.3
D 7 126 1399578 10341.88 470 456 135.3
D 8 176 1071352 7915.74 470 456 135.3

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