ASTROSAT CZTI

Data Quality Report

Orbit 50223

Creation date: 2025-01-15T15:16:40.371147
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_003T01_9000006442_50223cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50223cztM0_level2_quad_clean.evt
Size (bytes)1,594,598,40066,392,640
Size1.5 GB 63.3 MB
Events in quadrant A16,639,483503,859
Events in quadrant B7,082,972739,482
Events in quadrant C17,078,38984,956
Events in quadrant D17,634,515136,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546840
B0263970
C0560810
D0575610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7689570774.222916%
B768985411.106776%
C76897689100.000000%
D7688768599.960978%

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 7688 7688 5612 5612 73.00% 73.00%
B 7688 7688 660 660 8.58% 8.58%
C 7688 7688 5751 5751 74.80% 74.80%
D 7687 7687 6645 6645 86.44% 86.44%

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 98 12656770 89855.92 566 552 140.9
A 12 250 342861 2430.31 566 552 140.9
A 4 156 241969 1714.0 566 552 140.9
B 4 206 2136472 12923.64 772 745 165.3
B 5 185 825588 4991.26 772 745 165.3
B 9 218 221335 1334.83 772 745 165.3
C 15 197 10365974 231761.32 112 109 44.7
C 15 214 2138509 47810.62 112 109 44.7
C 4 111 1195388 26724.2 112 109 44.7
D 7 61 10881496 168855.7 184 175 64.4
D 15 108 1283347 19912.19 184 175 64.4
D 7 43 1139906 17686.28 184 175 64.4

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