ASTROSAT CZTI

Data Quality Report

Orbit 56465

Creation date: 2026-03-06T11:34:46.382539
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_060T01_9000006556_56465cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56465cztM0_level2_quad_clean.evt
Size (bytes)583,369,92095,745,600
Size556.3 MB 91.3 MB
Events in quadrant A7,354,916515,770
Events in quadrant B3,456,515721,387
Events in quadrant C3,604,226643,790
Events in quadrant D6,637,291532,457

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267327
B0149812
C0158122
D0244492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6970172124.691535%
B69701432.051650%
C69701201.721664%
D697098314.103300%

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 9100 6972 1552 1552 17.05% 22.26%
B 9100 6972 6 6 0.07% 0.09%
C 9100 6972 46 46 0.51% 0.66%
D 9100 6972 834 834 9.16% 11.96%

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 4 95 3344266 19735.85 690 674 169.4
A 12 3 653664 3854.33 690 674 169.4
A 4 206 256743 1511.47 690 674 169.4
B 0 63 147153 894.24 773 745 163.7
B 5 172 80828 489.14 773 745 163.7
B 12 111 20288 119.36 773 745 163.7
C 15 230 212875 1014.17 766 761 209.2
C 13 3 195145 929.4 766 761 209.2
C 12 252 97954 464.7 766 761 209.2
D 12 4 2323368 11576.5 709 678 200.6
D 8 129 579687 2885.83 709 678 200.6
D 2 249 359795 1789.87 709 678 200.6

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