ASTROSAT CZTI

Data Quality Report

Orbit 57562

Creation date: 2026-05-19T12:53:57.531032
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_113T09_9000006574_57562cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57562cztM0_level2_quad_clean.evt
Size (bytes)1,522,013,760252,141,120
Size1.4 GB 240.5 MB
Events in quadrant A8,680,0671,734,764
Events in quadrant B9,214,8641,850,552
Events in quadrant C16,339,6441,505,231
Events in quadrant D20,668,8091,262,506

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396243
B0406833
C0615913
D0741863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185892021.086664%
B185892691.447092%
C18589196110.549250%
D18589343418.473291%

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 20279 18592 126 126 0.62% 0.68%
B 20279 18592 82 82 0.40% 0.44%
C 20279 18592 1791 1791 8.83% 9.63%
D 20279 18592 3562 3562 17.56% 19.16%

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 10 251 625575 1272.31 1997 1945 490.2
A 3 14 110553 221.58 1997 1945 490.2
A 8 249 79935 159.11 1997 1945 490.2
B 4 206 574197 1359.03 1971 1896 421.1
B 10 247 283407 668.5 1971 1896 421.1
B 7 252 134303 314.42 1971 1896 421.1
C 15 224 4712539 9500.44 1848 1835 495.8
C 12 254 2758924 5560.43 1848 1835 495.8
C 14 254 733773 1476.16 1848 1835 495.8
D 15 142 9539436 19402.27 1746 1668 491.6
D 8 160 2197368 4466.62 1746 1668 491.6
D 2 252 423001 857.1 1746 1668 491.6

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