ASTROSAT CZTI

Data Quality Report

Orbit 59248

Creation date: 2026-09-09T17:42:17.902734
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/AS1T05_271T01_9000006604_59248cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59248cztM0_level2_quad_clean.evt
Size (bytes)1,307,295,360257,284,800
Size1.2 GB 245.4 MB
Events in quadrant A10,274,6481,700,635
Events in quadrant B8,864,0401,841,546
Events in quadrant C9,405,1061,647,079
Events in quadrant D18,407,7181,317,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435374
B0399224
C0412724
D0676194

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186066653.574116%
B186055252.821822%
C186063982.139095%
D18606255013.705256%

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 19881 18610 363 363 1.83% 1.95%
B 19880 18609 85 85 0.43% 0.46%
C 19881 18610 196 196 0.99% 1.05%
D 19881 18610 2301 2301 11.57% 12.36%

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 15 233 1487736 3048.32 2019 1969 487.4
A 10 251 360365 735.31 2019 1969 487.4
A 0 128 210440 427.72 2019 1969 487.4
B 4 236 278429 645.94 1997 1917 428.1
B 4 201 205311 475.13 1997 1917 428.1
B 10 247 199323 461.14 1997 1917 428.1
C 12 252 468141 866.49 1979 1961 538.0
C 10 22 375044 693.45 1979 1961 538.0
C 2 12 355516 657.15 1979 1961 538.0
D 12 110 8085845 15176.98 1885 1801 532.7
D 12 2 1495592 2804.44 1885 1801 532.7
D 3 12 854320 1600.52 1885 1801 532.7

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