ASTROSAT CZTI

Data Quality Report

Orbit 20170321_A02_165T03_9000001098_level2

Creation date: 2025-11-10T05:39:47.342831
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/AS1A02_165T03_9000001098cztM0_level2.fits modeM0/AS1A02_165T03_9000001098cztM0_level2_quad_clean.evt
Size (bytes)84,487,68046,264,320
Size80.6 MB 44.1 MB
Events in quadrant A510,912205,708
Events in quadrant B501,252210,166
Events in quadrant C518,226209,824
Events in quadrant D444,502189,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174580
B0179270
C0175290
D0207850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8409590.701629%
B84091011.201094%
C8409640.761089%
D84091621.926507%

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 11105 8409 0 0 0.00% 0.00%
B 11105 8409 0 0 0.00% 0.00%
C 11105 8409 0 0 0.00% 0.00%
D 11105 8402 0 0 0.00% 0.00%

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 0 29 499 10.6 133 125 35.3
A 7 110 461 9.53 133 125 35.3
A 0 28 383 7.32 133 125 35.3
B 2 9 420 10.56 132 126 27.8
B 12 226 367 8.65 132 126 27.8
B 3 17 343 7.79 132 126 27.8
C 1 81 402 7.24 137 129 37.7
C 1 80 381 6.68 137 129 37.7
C 9 242 368 6.34 137 129 37.7
D 6 231 356 6.96 126 116 34.5
D 3 14 333 6.29 126 116 34.5
D 6 67 330 6.2 126 116 34.5

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