ASTROSAT CZTI

Data Quality Report

Orbit 54011

Creation date: 2025-09-23T11:04:18.715671
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_54011cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54011cztM0_level2_quad_clean.evt
Size (bytes)877,173,12085,737,600
Size836.5 MB 81.8 MB
Events in quadrant A4,017,948682,159
Events in quadrant B4,140,730747,539
Events in quadrant C10,651,719400,114
Events in quadrant D13,092,235257,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174752
B0175732
C0367262
D0440014

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73121572.147155%
B73121652.256565%
C7312312842.778993%
D7311449061.414307%

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 7747 7313 111 111 1.43% 1.52%
B 7747 7313 90 90 1.16% 1.23%
C 7747 7313 2449 2449 31.61% 33.49%
D 7746 7312 3390 3390 43.76% 46.36%

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 355438 1898.5 758 737 186.8
A 12 115 297158 1586.56 758 737 186.8
A 0 8 128983 686.42 758 737 186.8
B 2 2 502487 3096.97 763 736 162.0
B 5 250 189918 1167.69 763 736 162.0
B 0 213 125331 769.04 763 736 162.0
C 4 5 4631544 31661.55 529 523 146.3
C 14 80 3534660 24162.33 529 523 146.3
C 13 3 216191 1474.49 529 523 146.3
D 8 176 10646078 88983.01 417 397 119.6
D 10 172 286244 2389.28 417 397 119.6
D 2 165 239779 2000.9 417 397 119.6

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