ASTROSAT CZTI

Data Quality Report

Orbit 53911

Creation date: 2025-09-15T14:46:27.715648
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_057T04_9000006508_53911cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53911cztM0_level2_quad_clean.evt
Size (bytes)797,788,800109,635,840
Size760.8 MB 104.6 MB
Events in quadrant A4,744,057782,511
Events in quadrant B4,754,063843,864
Events in quadrant C6,789,753710,714
Events in quadrant D12,601,007406,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198750
B0195470
C0259610
D0432070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82892302.774762%
B82901311.580217%
C82906587.937274%
D8290370044.632087%

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 8289 8289 182 182 2.20% 2.20%
B 8290 8290 48 48 0.58% 0.58%
C 8290 8290 579 579 6.98% 6.98%
D 8290 8290 3307 3307 39.89% 39.89%

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 15 174 481957 2153.39 915 894 223.4
A 10 253 409801 1830.4 915 894 223.4
A 4 249 71252 314.95 915 894 223.4
B 5 250 679212 3461.29 912 878 196.0
B 7 0 202886 1030.77 912 878 196.0
B 6 255 81719 412.5 912 878 196.0
C 15 224 1018004 4302.5 865 857 236.4
C 12 254 848523 3585.6 865 857 236.4
C 15 174 584726 2469.75 865 857 236.4
D 8 176 9110809 52478.4 613 586 173.6
D 2 16 370042 2128.21 613 586 173.6
D 2 165 337307 1939.64 613 586 173.6

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