ASTROSAT CZTI

Data Quality Report

Orbit 58184

Creation date: 2026-06-30T11:40:48.344925
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_042T02_9000006586_58184cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58184cztM0_level2_quad_clean.evt
Size (bytes)686,448,000123,716,160
Size654.6 MB 118.0 MB
Events in quadrant A3,860,676829,743
Events in quadrant B6,915,790839,645
Events in quadrant C4,015,021784,987
Events in quadrant D9,956,210697,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178180
B0264390
C0184790
D0355790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8559420.490712%
B85606387.453271%
C8560480.560748%
D85607048.224299%

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 8559 8559 16 16 0.19% 0.19%
B 8560 8560 323 323 3.77% 3.77%
C 8560 8560 39 39 0.46% 0.46%
D 8560 8560 671 671 7.84% 7.84%

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 3 245 61999 257.26 965 938 237.3
A 4 3 34193 140.11 965 938 237.3
A 11 3 20613 82.89 965 938 237.3
B 10 128 1880479 9429.3 924 890 199.3
B 2 249 869051 4355.29 924 890 199.3
B 4 201 154069 768.45 924 890 199.3
C 12 252 233437 910.75 931 920 255.3
C 6 223 41480 158.87 931 920 255.3
C 1 12 33082 125.98 931 920 255.3
D 12 110 3889050 15189.12 903 861 256.0
D 8 160 1219144 4759.19 903 861 256.0
D 8 240 411009 1602.23 903 861 256.0

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