ASTROSAT CZTI

Data Quality Report

Orbit 56461

Creation date: 2026-03-06T05:24:58.354231
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_56461cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56461cztM0_level2_quad_clean.evt
Size (bytes)678,104,64082,736,640
Size646.7 MB 78.9 MB
Events in quadrant A5,627,402537,919
Events in quadrant B10,349,607400,139
Events in quadrant C4,264,417571,386
Events in quadrant D4,357,572543,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213922
B0350712
C0173262
D0174632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A647493814.488724%
B6473283743.828209%
C64733565.499768%
D64732073.197899%

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 7574 6475 853 853 11.26% 13.17%
B 7573 6474 2730 2730 36.05% 42.17%
C 7573 6474 290 290 3.83% 4.48%
D 7573 6474 195 195 2.57% 3.01%

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 12 3 1917774 12056.55 639 624 159.0
A 4 249 452854 2843.98 639 624 159.0
A 12 194 262325 1645.78 639 624 159.0
B 5 172 7779663 64430.04 564 545 120.7
B 0 63 148891 1228.67 564 545 120.7
B 1 159 31997 260.5 564 545 120.7
C 13 3 627030 3476.6 653 649 180.2
C 15 230 550709 3052.99 653 649 180.2
C 12 254 256201 1418.39 653 649 180.2
D 9 49 587789 3149.27 655 625 186.4
D 12 4 547032 2930.67 655 625 186.4
D 2 249 183163 979.05 655 625 186.4

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