ASTROSAT CZTI

Data Quality Report

Orbit 53678

Creation date: 2025-08-30T22:14:50.199017
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_022T05_9000006504_53678cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53678cztM0_level2_quad_clean.evt
Size (bytes)1,109,145,60083,730,240
Size1.0 GB 79.9 MB
Events in quadrant A14,488,909322,474
Events in quadrant B4,870,473754,954
Events in quadrant C14,176,977322,955
Events in quadrant D6,942,547612,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482187
B0195740
C0472650
D0257550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7493444159.268651%
B74931762.348859%
C7493439958.708128%
D74935507.340184%

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 7492 7492 4209 4209 56.18% 56.18%
B 7493 7493 95 95 1.27% 1.27%
C 7492 7492 3933 3933 52.50% 52.50%
D 7493 7493 575 575 7.67% 7.67%

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 3 63 9423577 60487.71 612 596 155.8
A 3 78 811633 5206.18 612 596 155.8
A 14 254 715198 4587.15 612 596 155.8
B 7 0 664593 3870.94 802 775 171.5
B 5 185 399326 2324.08 802 775 171.5
B 0 171 184991 1074.22 802 775 171.5
C 15 224 7374449 47568.67 554 549 155.0
C 1 241 1578305 10178.03 554 549 155.0
C 2 12 915216 5900.47 554 549 155.0
D 12 34 1577120 7034.78 774 738 224.1
D 10 172 1244878 5552.12 774 738 224.1
D 7 70 373479 1663.4 774 738 224.1

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