ASTROSAT CZTI

Data Quality Report

Orbit 55595

Creation date: 2026-01-07T22:58:07.969198
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_021T06_9000006538_55595cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55595cztM0_level2_quad_clean.evt
Size (bytes)626,232,960101,206,080
Size597.2 MB 96.5 MB
Events in quadrant A3,936,012702,921
Events in quadrant B3,565,953752,218
Events in quadrant C10,737,813469,814
Events in quadrant D4,354,138612,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174650
B0164980
C0371645
D0186520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75611542.036768%
B75621441.904258%
C7561245932.522153%
D75613013.980955%

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 7561 7561 94 94 1.24% 1.24%
B 7562 7562 37 37 0.49% 0.49%
C 7561 7561 2132 2132 28.20% 28.20%
D 7561 7561 219 219 2.90% 2.90%

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 0 8 536846 2755.32 796 774 194.6
A 8 249 175092 895.96 796 774 194.6
A 15 32 44599 225.25 796 774 194.6
B 0 171 220386 1322.03 782 752 166.1
B 1 159 86062 513.5 782 752 166.1
B 4 169 40922 241.79 782 752 166.1
C 9 38 7728600 41201.42 689 681 187.6
C 13 3 78617 415.51 689 681 187.6
C 6 223 69985 369.49 689 681 187.6
D 2 249 540077 2492.34 772 738 216.4
D 10 181 181750 836.48 772 738 216.4
D 15 125 112120 514.71 772 738 216.4

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