ASTROSAT CZTI

Data Quality Report

Orbit 53979

Creation date: 2025-09-20T04:00:05.664677
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/AS1A14_041T01_9000006510_53979cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53979cztM0_level2_quad_clean.evt
Size (bytes)828,504,00079,911,360
Size790.1 MB 76.2 MB
Events in quadrant A3,416,144644,075
Events in quadrant B4,642,956686,256
Events in quadrant C9,107,338416,288
Events in quadrant D13,003,319223,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148992
B0183672
C0314362
D0430613

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64351342.082362%
B64353635.641026%
C6435248838.663559%
D6434413264.221324%

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 7650 6436 79 79 1.03% 1.23%
B 7650 6436 199 199 2.60% 3.09%
C 7650 6436 2279 2279 29.79% 35.41%
D 7648 6433 3850 3850 50.34% 59.85%

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 15 174 426311 2487.01 688 672 171.1
A 3 78 53464 308.46 688 672 171.1
A 7 14 45652 262.82 688 672 171.1
B 5 250 685940 4757.97 684 662 144.0
B 0 155 679431 4712.78 684 662 144.0
B 0 213 263209 1822.9 684 662 144.0
C 12 249 4131113 27720.32 537 532 149.0
C 1 241 2095108 14056.69 537 532 149.0
C 12 252 200324 1340.8 537 532 149.0
D 8 176 10080132 83630.87 416 398 120.5
D 6 239 309419 2563.93 416 398 120.5
D 2 172 265741 2201.53 416 398 120.5

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