ASTROSAT CZTI

Data Quality Report

Orbit 58924

Creation date: 2026-08-18T21:27:33.697163
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_004T07_9000006598_58924cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58924cztM0_level2_quad_clean.evt
Size (bytes)576,069,120107,798,400
Size549.4 MB 102.8 MB
Events in quadrant A6,674,820659,423
Events in quadrant B5,329,082754,932
Events in quadrant C4,329,870677,178
Events in quadrant D4,411,668653,509

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249630
B0208610
C0181310
D0181800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A745794112.619016%
B74573795.082473%
C74582623.513006%
D74581371.836954%

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 7456 7456 721 721 9.67% 9.67%
B 7457 7457 214 214 2.87% 2.87%
C 7458 7458 220 220 2.95% 2.95%
D 7458 7458 118 118 1.58% 1.58%

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 14 238 2533494 12610.05 802 780 200.8
A 13 248 751774 3739.1 802 780 200.8
A 15 233 91819 453.27 802 780 200.8
B 4 171 806201 4667.08 812 782 172.6
B 7 0 598031 3460.81 812 782 172.6
B 4 236 167552 966.36 812 782 172.6
C 12 252 821482 3731.94 798 788 219.9
C 15 208 110671 499.67 798 788 219.9
C 3 233 97727 440.81 798 788 219.9
D 12 110 400758 1734.85 813 778 230.6
D 9 49 153403 661.99 813 778 230.6
D 2 31 100885 434.2 813 778 230.6

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