ASTROSAT CZTI

Data Quality Report

Orbit 59408

Creation date: 2026-09-20T11:49:32.221713
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_033T01_9000006608_59408cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59408cztM0_level2_quad_clean.evt
Size (bytes)1,302,448,320258,664,320
Size1.2 GB 246.7 MB
Events in quadrant A10,816,6141,592,301
Events in quadrant B10,026,5401,827,604
Events in quadrant C9,176,7731,671,651
Events in quadrant D16,768,3271,470,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454553
B0429723
C0409183
D0628873

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184119054.915540%
B184125432.949164%
C184122061.118836%
D1841113077.099017%

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 20056 18415 515 515 2.57% 2.80%
B 20057 18416 267 267 1.33% 1.45%
C 20057 18415 156 156 0.78% 0.85%
D 20056 18415 1138 1138 5.67% 6.18%

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 14 238 2306389 4876.12 1932 1884 472.6
A 14 254 724791 1529.6 1932 1884 472.6
A 3 245 105265 218.74 1932 1884 472.6
B 6 255 1297678 3139.83 1942 1864 412.7
B 4 236 453071 1093.3 1942 1864 412.7
B 4 201 177461 425.48 1942 1864 412.7
C 4 5 675261 1273.6 1929 1910 528.7
C 6 223 357473 672.53 1929 1910 528.7
C 14 96 248337 466.1 1929 1910 528.7
D 12 110 7934444 15188.56 1857 1776 522.3
D 3 12 1159284 2216.26 1857 1776 522.3
D 13 138 143888 272.1 1857 1776 522.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct