ASTROSAT CZTI

Data Quality Report

Orbit 58986

Creation date: 2026-08-23T03:12:02.052192
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_58986cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58986cztM0_level2_quad_clean.evt
Size (bytes)3,012,949,440170,386,560
Size2.8 GB 162.5 MB
Events in quadrant A22,549,0111,249,975
Events in quadrant B10,997,5751,808,335
Events in quadrant C43,585,82722,534
Events in quadrant D32,970,936800,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0798293
B0456703
C01417853
D01105583

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18530525728.370210%
B185319074.894501%
C185311832998.909935%
D18531980452.905941%

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 19840 18533 4241 4241 21.38% 22.88%
B 19841 18536 522 522 2.63% 2.82%
C 19840 18530 17508 17508 88.25% 94.48%
D 19840 18534 8419 8419 42.43% 45.42%

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 14719796 34645.52 1727 1685 424.8
A 3 14 611993 1436.63 1727 1685 424.8
A 15 233 233551 545.8 1727 1685 424.8
B 4 236 1727468 4048.16 1989 1910 426.3
B 4 171 230961 537.35 1989 1910 426.3
B 10 247 193623 449.76 1989 1910 426.3
C 15 219 42326938 555091.55 272 269 76.3
C 12 249 62435 815.27 272 269 76.3
C 13 3 41758 544.11 272 269 76.3
D 12 110 24917233 56226.28 1559 1490 443.1
D 6 239 348609 783.33 1559 1490 443.1
D 12 248 301816 677.73 1559 1490 443.1

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