ASTROSAT CZTI

Data Quality Report

Orbit 52109

Creation date: 2025-05-17T13:52:46.144684
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/AS1C09_011T07_9000006470_52109cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52109cztM0_level2_quad_clean.evt
Size (bytes)1,187,798,40079,974,720
Size1.1 GB 76.3 MB
Events in quadrant A4,886,566724,094
Events in quadrant B8,386,796618,376
Events in quadrant C10,606,661510,556
Events in quadrant D19,484,15824,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201502
B0301671
C0370061
D0632951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78171792.289881%
B7817188124.062940%
C7817256432.800307%
D7817762397.518229%

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 7817 7817 153 153 1.96% 1.96%
B 7817 7817 1480 1480 18.93% 18.93%
C 7817 7816 1967 1967 25.16% 25.17%
D 7817 7817 6705 6705 85.77% 85.77%

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 8 43 507509 2466.75 821 799 205.4
A 4 3 240492 1166.87 821 799 205.4
A 3 61 208927 1013.2 821 799 205.4
B 8 3 4082695 26847.83 721 697 152.0
B 12 32 419103 2751.91 721 697 152.0
B 0 216 162779 1066.03 721 697 152.0
C 15 224 5423624 28375.4 687 681 191.1
C 12 247 560847 2931.05 687 681 191.1
C 2 239 465870 2434.09 687 681 191.1
D 6 42 14879878 167537.19 306 292 88.8
D 15 94 1778542 20022.26 306 292 88.8
D 12 17 416194 4682.86 306 292 88.8

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