ASTROSAT CZTI

Data Quality Report

Orbit 20260814_A14_004T07_9000006598_level2

Creation date: 2026-09-02T11:21:06.072177
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_004T07_9000006598cztM0_level2.fits modeM0/AS1A14_004T07_9000006598cztM0_level2_quad_clean.evt
Size (bytes)7,918,456,3202,171,710,080
Size7.4 GB 2.0 GB
Events in quadrant A57,470,9935,854,367
Events in quadrant B57,360,9546,316,877
Events in quadrant C34,632,7223,314,532
Events in quadrant D43,618,8993,720,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023880660
B019994600
C022699970
D033027010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09360
B09410
C09360
D09410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146010
B0146110
C0145880
D0145870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68535310320815.059101%
B6872897522310.944886%
C68659811748717.111468%
D68694523271733.877094%

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 860885 685278 0 0 0.00% 0.00%
B 860886 690219 0 0 0.00% 0.00%
C 860886 639951 0 0 0.00% 0.00%
D 860885 689364 0 0 0.00% 0.00%

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 14 188 45668 8.03 15273 14508 3880.6
A 14 204 39732 6.5 15273 14508 3880.6
A 14 95 34457 5.14 15273 14508 3880.6
B 2 9 44296 9.23 15410 14845 3189.8
B 2 8 37514 7.11 15410 14845 3189.8
B 3 25 35021 6.32 15410 14845 3189.8
C 6 179 26614 6.63 9313 8820 2685.7
C 7 221 22536 5.11 9313 8820 2685.7
C -1 -1 -1 -1.0 9313 8820 2685.7
D 6 218 35030 6.71 12673 11616 3491.2
D 15 11 32851 6.08 12673 11616 3491.2
D 6 223 30661 5.45 12673 11616 3491.2

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