ASTROSAT CZTI

Data Quality Report

Orbit 54838

Creation date: 2025-11-16T23:56:17.006570
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_039T06_9000006526_54838cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54838cztM0_level2_quad_clean.evt
Size (bytes)494,222,40096,347,520
Size471.3 MB 91.9 MB
Events in quadrant A3,373,205639,719
Events in quadrant B3,417,680687,092
Events in quadrant C3,759,726604,617
Events in quadrant D7,213,198509,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152152
B0151913
C0162202
D0261552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68281942.841242%
B68271542.255749%
C68272253.295738%
D6827108115.834188%

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 7698 6829 66 66 0.86% 0.97%
B 7697 6828 27 27 0.35% 0.40%
C 7697 6828 109 109 1.42% 1.60%
D 7697 6828 881 881 11.45% 12.90%

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 12 17 233495 1260.73 748 728 184.6
A 8 206 46821 249.65 748 728 184.6
A 12 194 34672 183.85 748 728 184.6
B 5 185 164483 1028.49 735 709 159.2
B 5 236 113730 709.77 735 709 159.2
B 10 247 65285 405.53 735 709 159.2
C 12 252 261059 1314.51 726 720 198.0
C 13 3 244523 1231.02 726 720 198.0
C 12 2 181081 910.69 726 720 198.0
D 11 176 2052919 10563.97 686 656 194.3
D 3 12 1179846 6069.85 686 656 194.3
D 15 94 222837 1143.67 686 656 194.3

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