ASTROSAT CZTI

Data Quality Report

Orbit 58619

Creation date: 2026-07-29T10:54:11.738816
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_004T06_9000006594_58619cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58619cztM0_level2_quad_clean.evt
Size (bytes)632,600,640126,711,360
Size603.3 MB 120.8 MB
Events in quadrant A4,532,656840,441
Events in quadrant B5,354,667873,746
Events in quadrant C7,790,516751,023
Events in quadrant D5,058,926762,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196791
B0220451
C0293174
D0212351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8769870.992131%
B87703604.104903%
C876990310.297639%
D87691822.075493%

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 8889 8771 29 29 0.33% 0.33%
B 8890 8772 133 133 1.50% 1.52%
C 8889 8771 757 757 8.52% 8.63%
D 8889 8771 152 152 1.71% 1.73%

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 12 114 306148 1262.4 977 949 241.8
A 10 251 219455 903.81 977 949 241.8
A 10 17 126569 519.6 977 949 241.8
B 6 255 784702 3795.82 959 924 206.5
B 8 234 384257 1856.47 959 924 206.5
B 0 186 53504 254.64 959 924 206.5
C 15 217 2585543 10142.95 930 921 254.8
C 13 3 963480 3777.41 930 921 254.8
C 12 252 296856 1161.35 930 921 254.8
D 2 249 484234 1800.1 952 910 268.5
D 8 240 353913 1314.73 952 910 268.5
D 2 120 149642 553.94 952 910 268.5

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