ASTROSAT CZTI

Data Quality Report

Orbit 58734

Creation date: 2026-08-06T02:42:35.012789
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_58734cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58734cztM0_level2_quad_clean.evt
Size (bytes)545,587,200104,025,600
Size520.3 MB 99.2 MB
Events in quadrant A3,242,732706,102
Events in quadrant B3,870,066736,778
Events in quadrant C3,837,412672,696
Events in quadrant D8,681,199528,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015242118
B016842177
C016929132
D031119365

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01482
B01482
C01482
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7277380.522193%
B72661732.380952%
C72731462.007425%
D7252146120.146167%

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 7576 7290 1 1 0.01% 0.01%
B 7560 7279 56 56 0.74% 0.77%
C 7563 7285 143 143 1.89% 1.96%
D 7551 7264 1470 1470 19.47% 20.24%

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 14 50347 249.0 806 784 199.1
A 15 233 42168 207.91 806 784 199.1
A 3 245 14359 68.2 806 784 199.1
B 12 0 199682 1162.79 788 758 171.1
B 2 249 111971 650.08 788 758 171.1
B 8 234 99067 574.65 788 758 171.1
C 6 223 222561 1029.45 781 773 215.4
C 13 3 194587 899.61 781 773 215.4
C 14 254 148594 686.13 781 773 215.4
D 11 129 5198626 25624.54 714 684 202.9
D 2 249 326101 1604.22 714 684 202.9
D 6 239 54000 262.83 714 684 202.9

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