ASTROSAT CZTI

Data Quality Report

Orbit 58857

Creation date: 2026-08-17T19:14:27.846072
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_106T01_9000006596_58857cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58857cztM0_level2_quad_clean.evt
Size (bytes)458,294,40093,700,800
Size437.1 MB 89.4 MB
Events in quadrant A5,545,288562,533
Events in quadrant B4,231,076653,973
Events in quadrant C3,276,075604,787
Events in quadrant D3,407,631563,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209621
B0167921
C0142941
D0148421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648581212.521203%
B64863825.889608%
C6485701.079414%
D64851191.835004%

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 7445 6485 629 629 8.45% 9.70%
B 7446 6486 221 221 2.97% 3.41%
C 7445 6486 42 42 0.56% 0.65%
D 7445 6486 84 84 1.13% 1.30%

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 3 95 1420517 8247.08 688 671 172.2
A 15 233 410438 2380.1 688 671 172.2
A 13 248 372948 2162.35 688 671 172.2
B 5 172 757202 4950.58 708 682 152.8
B 5 185 351429 2295.25 708 682 152.8
B 4 236 113808 740.28 708 682 152.8
C 6 223 144561 738.92 703 698 194.7
C 12 2 116912 596.91 703 698 194.7
C 9 237 82366 419.47 703 698 194.7
D 11 129 294113 1478.53 696 664 198.5
D 3 12 122491 613.82 696 664 198.5
D 5 32 99326 497.1 696 664 198.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct