ASTROSAT CZTI

Data Quality Report

Orbit 57867

Creation date: 2026-06-08T19:38:45.293108
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_125T11_9000006582_57867cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57867cztM0_level2_quad_clean.evt
Size (bytes)1,671,019,200248,402,880
Size1.6 GB 236.9 MB
Events in quadrant A9,075,5351,733,977
Events in quadrant B10,381,0451,807,398
Events in quadrant C29,236,7731,101,042
Events in quadrant D11,696,2371,572,094

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0408703
B0445193
C01000353
D0474693

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189614572.410210%
B1896210015.278979%
C18962697336.773547%
D189624222.225504%

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 19986 18961 102 102 0.51% 0.54%
B 19987 18962 443 443 2.22% 2.34%
C 19987 18962 6363 6363 31.84% 33.56%
D 19987 18963 126 126 0.63% 0.66%

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 7 64 698511 1388.81 2037 1983 501.5
A 13 248 407303 808.17 2037 1983 501.5
A 3 128 45828 87.42 2037 1983 501.5
B 2 249 1105221 2622.76 1981 1903 420.7
B 10 247 377944 893.91 1981 1903 420.7
B 0 245 187439 441.05 1981 1903 420.7
C 9 38 15133745 32785.37 1698 1676 461.5
C 15 224 4779079 10350.79 1698 1676 461.5
C 2 12 1001951 2167.21 1698 1676 461.5
D 12 110 2340417 4212.22 1982 1893 555.2
D 3 12 404152 724.56 1982 1893 555.2
D 3 224 179653 320.19 1982 1893 555.2

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