ASTROSAT CZTI

Data Quality Report

Orbit 58400

Creation date: 2026-07-14T15:31:44.361053
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_58400cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58400cztM0_level2_quad_clean.evt
Size (bytes)799,300,80096,802,560
Size762.3 MB 92.3 MB
Events in quadrant A7,595,166557,740
Events in quadrant B4,222,387760,134
Events in quadrant C9,991,650484,419
Events in quadrant D7,204,808612,732

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276820
B0174410
C0347570
D0267320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7409171823.188015%
B74102132.874494%
C7410245233.090418%
D74104866.558704%

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 7409 7409 1247 1247 16.83% 16.83%
B 7410 7410 65 65 0.88% 0.88%
C 7410 7410 1836 1836 24.78% 24.78%
D 7410 7410 388 388 5.24% 5.24%

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 4082259 21295.53 776 755 191.7
A 12 80 210555 1094.65 776 755 191.7
A 2 143 121694 631.01 776 755 191.7
B 4 158 277895 1560.11 824 794 177.6
B 0 153 199453 1118.47 824 794 177.6
B 4 201 105270 588.21 824 794 177.6
C 6 223 3814481 20204.15 685 677 188.8
C 5 10 1805424 9560.9 685 677 188.8
C 9 38 903638 4783.56 685 677 188.8
D 5 113 2152271 9621.93 793 760 223.6
D 8 240 1454396 6500.91 793 760 223.6
D 12 248 113547 504.4 793 760 223.6

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