ASTROSAT CZTI

Data Quality Report

Orbit 59376

Creation date: 2026-09-18T07:22:20.875208
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_59376cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59376cztM0_level2_quad_clean.evt
Size (bytes)702,077,760109,601,280
Size669.6 MB 104.5 MB
Events in quadrant A11,937,363466,256
Events in quadrant B4,084,543840,314
Events in quadrant C4,055,218761,897
Events in quadrant D5,278,875683,473

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411950
B0181770
C0182520
D0216650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8150322039.509202%
B81511541.889339%
C8151851.042817%
D81513834.698810%

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 8149 8149 3025 3025 37.12% 37.12%
B 8151 8151 39 39 0.48% 0.48%
C 8151 8151 45 45 0.55% 0.55%
D 8151 8151 342 342 4.20% 4.20%

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 8985984 51249.34 711 693 175.3
A 14 238 137347 779.43 711 693 175.3
A 10 251 27698 154.03 711 693 175.3
B 4 236 129229 667.37 893 856 192.4
B 5 185 128122 661.61 893 856 192.4
B 4 171 116767 602.58 893 856 192.4
C 6 223 177045 724.97 887 882 243.0
C 2 12 103094 420.64 887 882 243.0
C 3 233 96753 394.54 887 882 243.0
D 1 3 835081 3451.96 856 820 241.7
D 12 110 762965 3153.56 856 820 241.7
D 5 32 92953 381.22 856 820 241.7

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