ASTROSAT CZTI

Data Quality Report

Orbit 54081

Creation date: 2025-09-27T01:08:54.611850
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_54081cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54081cztM0_level2_quad_clean.evt
Size (bytes)547,104,96095,057,280
Size521.8 MB 90.7 MB
Events in quadrant A3,233,201656,551
Events in quadrant B4,872,747675,463
Events in quadrant C3,936,633607,150
Events in quadrant D7,703,709484,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144492
B0190432
C0162543
D0274792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65141382.118514%
B65145748.811790%
C65132944.514049%
D6513126319.391985%

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 7658 6514 75 75 0.98% 1.15%
B 7658 6514 334 334 4.36% 5.13%
C 7657 6513 200 200 2.61% 3.07%
D 7656 6512 1033 1033 13.49% 15.86%

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 292410 1668.48 706 689 174.8
A 0 8 56965 321.87 706 689 174.8
A 3 14 35918 201.49 706 689 174.8
B 5 236 1396777 9594.97 692 668 145.5
B 0 213 230281 1578.05 692 668 145.5
B 15 20 185617 1271.09 692 668 145.5
C 9 38 643014 3383.34 690 682 189.9
C 13 3 252274 1325.2 690 682 189.9
C 1 16 87718 458.44 690 682 189.9
D 2 172 2682235 15285.99 613 584 175.4
D 11 176 1348588 7683.92 613 584 175.4
D 8 176 686301 3908.74 613 584 175.4

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