ASTROSAT CZTI

Data Quality Report

Orbit 53545

Creation date: 2025-08-21T22:54:58.657327
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_004T05_9000006502_53545cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53545cztM0_level2_quad_clean.evt
Size (bytes)687,242,88085,887,360
Size655.4 MB 81.9 MB
Events in quadrant A8,607,915446,633
Events in quadrant B3,846,541657,780
Events in quadrant C7,434,251499,911
Events in quadrant D5,047,645543,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300741
B0159731
C0265501
D0194121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6487224034.530600%
B64872864.408818%
C6487136020.965007%
D64885368.261406%

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 7416 6486 1890 1890 25.49% 29.14%
B 7417 6487 180 180 2.43% 2.77%
C 7417 6487 1241 1241 16.73% 19.13%
D 7418 6488 477 477 6.43% 7.35%

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 3 63 5203280 35474.17 591 578 146.7
A 15 174 575929 3922.98 591 578 146.7
A 4 249 237984 1618.73 591 578 146.7
B 5 185 661372 4432.07 694 671 149.1
B 8 128 122258 815.62 694 671 149.1
B 10 28 51001 337.62 694 671 149.1
C 15 224 2063748 11838.38 626 621 174.3
C 1 241 2025310 11617.82 626 621 174.3
C 15 198 257297 1472.83 626 621 174.3
D 13 153 1094883 5688.39 673 644 192.4
D 2 153 310853 1612.62 673 644 192.4
D 2 120 139327 720.94 673 644 192.4

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