ASTROSAT CZTI

Data Quality Report

Orbit 58983

Creation date: 2026-08-22T21:11:37.876379
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_58983cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58983cztM0_level2_quad_clean.evt
Size (bytes)1,058,472,00081,397,440
Size1009.4 MB 77.6 MB
Events in quadrant A9,560,738547,405
Events in quadrant B4,592,265752,563
Events in quadrant C12,460,106205,089
Events in quadrant D11,997,975446,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335010
B0186890
C0422490
D0407060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7369198826.977880%
B73702753.731343%
C7370508368.968792%
D7370269436.553596%

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 7369 7369 1658 1658 22.50% 22.50%
B 7370 7370 136 136 1.85% 1.85%
C 7369 7369 4150 4150 56.32% 56.32%
D 7370 7370 2938 2938 39.86% 39.86%

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 6348664 35800.87 720 701 177.3
A 3 14 249688 1404.22 720 701 177.3
A 0 24 45265 251.33 720 701 177.3
B 10 247 393162 2240.18 809 779 175.2
B 4 171 230220 1309.92 809 779 175.2
B 8 234 172519 980.49 809 779 175.2
C 15 219 11171843 137662.06 293 290 81.2
C 14 254 30061 366.85 293 290 81.2
C 11 244 25860 315.09 293 290 81.2
D 12 110 8510158 40271.99 741 707 211.3
D 6 239 126593 595.77 741 707 211.3
D 2 249 101117 475.2 741 707 211.3

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