ASTROSAT CZTI

Data Quality Report

Orbit 56346

Creation date: 2026-02-26T10:39:17.235495
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_049T01_9000006552_56346cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56346cztM0_level2_quad_clean.evt
Size (bytes)690,805,44090,408,960
Size658.8 MB 86.2 MB
Events in quadrant A4,669,088624,395
Events in quadrant B5,224,233673,108
Events in quadrant C8,447,600448,380
Events in quadrant D6,723,497534,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182562
B0201062
C0296202
D0245306

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65503405.190840%
B65504186.381679%
C6550206631.541985%
D654966410.138953%

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 7670 6551 228 228 2.97% 3.48%
B 7670 6551 211 211 2.75% 3.22%
C 7669 6549 1601 1601 20.88% 24.45%
D 7669 6549 626 626 8.16% 9.56%

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 78 771367 4382.58 712 697 175.8
A 3 14 247646 1404.33 712 697 175.8
A 8 25 205005 1161.84 712 697 175.8
B 5 172 1472716 9859.72 711 687 149.3
B 5 185 212864 1421.17 711 687 149.3
B 4 171 163881 1093.08 711 687 149.3
C 12 254 3083854 19010.75 600 596 162.2
C 15 230 2401465 14803.28 600 596 162.2
C 13 3 249904 1537.18 600 596 162.2
D 2 62 1054396 5436.25 680 648 193.8
D 6 239 1017613 5246.49 680 648 193.8
D 8 129 794878 4097.41 680 648 193.8

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