ASTROSAT CZTI

Data Quality Report

Orbit 59345

Creation date: 2026-09-16T05:12:37.051952
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_033T01_9000006608_59345cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59345cztM0_level2_quad_clean.evt
Size (bytes)694,866,240118,895,040
Size662.7 MB 113.4 MB
Events in quadrant A3,858,778824,400
Events in quadrant B5,480,147844,516
Events in quadrant C4,473,770796,905
Events in quadrant D11,253,927547,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178091
B0221961
C0191421
D0393675

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8444480.568451%
B84456397.566607%
C8445961.136767%
D8442232827.576404%

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 9109 8445 11 11 0.12% 0.13%
B 9110 8446 361 361 3.96% 4.27%
C 9110 8446 29 29 0.32% 0.34%
D 9110 8445 1883 1883 20.67% 22.30%

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 80684 341.4 961 939 233.6
A 3 14 23671 97.32 961 939 233.6
A 3 137 12329 48.76 961 939 233.6
B 4 236 1183845 5852.63 937 901 202.1
B 5 236 193025 950.53 937 901 202.1
B 4 171 159036 782.37 937 901 202.1
C 3 233 303640 1173.18 947 940 258.0
C 1 16 171549 661.24 947 940 258.0
C 12 252 75365 288.45 947 940 258.0
D 12 110 7193598 30094.04 841 805 239.0
D 3 12 340245 1420.19 841 805 239.0
D 11 129 148752 619.0 841 805 239.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct