ASTROSAT CZTI

Data Quality Report

Orbit 55929

Creation date: 2026-02-04T21:05:12.269422
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_030T02_9000006544_55929cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55929cztM0_level2_quad_clean.evt
Size (bytes)569,122,560103,590,720
Size542.8 MB 98.8 MB
Events in quadrant A6,248,582597,802
Events in quadrant B3,587,295758,257
Events in quadrant C4,459,133657,742
Events in quadrant D6,177,005591,147

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243562
B0164012
C0191942
D0238083

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7654126916.579566%
B76551762.299151%
C76553925.120836%
D76547399.655082%

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 8789 7656 1194 1194 13.59% 15.60%
B 8790 7655 16 16 0.18% 0.21%
C 8790 7657 320 320 3.64% 4.18%
D 8789 7655 664 664 7.55% 8.67%

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 12 115 3067664 16439.43 755 737 186.6
A 4 249 97853 520.56 755 737 186.6
A 7 64 43927 231.51 755 737 186.6
B 7 0 202527 1171.98 805 775 172.1
B 7 252 38568 219.54 805 775 172.1
B 9 251 37563 213.7 805 775 172.1
C 12 252 1136187 5320.85 778 769 213.4
C 15 199 127336 593.12 778 769 213.4
C 6 223 59019 272.97 778 769 213.4
D 11 129 2612514 12346.1 749 715 211.5
D 2 62 275816 1300.42 749 715 211.5
D 7 129 167664 789.18 749 715 211.5

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