ASTROSAT CZTI

Data Quality Report

Orbit 58401

Creation date: 2026-07-14T17:20:10.406901
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_045T01_9000006590_58401cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58401cztM0_level2_quad_clean.evt
Size (bytes)917,406,720108,207,360
Size874.9 MB 103.2 MB
Events in quadrant A8,315,203654,708
Events in quadrant B8,018,736773,799
Events in quadrant C9,322,899597,932
Events in quadrant D7,667,742678,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303670
B0296050
C0334760
D0285900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8220148018.004866%
B8221105412.820825%
C8221189723.075052%
D82214905.960345%

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 8220 8220 1101 1101 13.39% 13.39%
B 8221 8221 652 652 7.93% 7.93%
C 8221 8221 1446 1446 17.59% 17.59%
D 8221 8221 419 419 5.10% 5.10%

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 12 114 4005452 18421.86 883 862 217.4
A 12 80 397740 1825.71 883 862 217.4
A 7 64 145244 664.18 883 862 217.4
B 5 172 2936125 15238.72 895 861 192.6
B 4 158 600300 3112.05 895 861 192.6
B 6 255 282482 1462.06 895 861 192.6
C 9 38 3079573 13889.86 810 804 221.7
C 6 223 1654763 7461.83 810 804 221.7
C 15 147 623216 2808.01 810 804 221.7
D 5 113 2012795 7910.92 889 843 254.3
D 8 240 765395 3006.19 889 843 254.3
D 2 249 699465 2746.96 889 843 254.3

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