ASTROSAT CZTI

Data Quality Report

Orbit 58198

Creation date: 2026-07-08T11:19:42.399128
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_042T02_9000006586_58198cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58198cztM0_level2_quad_clean.evt
Size (bytes)534,415,68086,575,680
Size509.7 MB 82.6 MB
Events in quadrant A6,099,570502,986
Events in quadrant B6,155,896538,709
Events in quadrant C3,034,495593,078
Events in quadrant D3,989,120532,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015818
B015820
C015818
D015812

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248282102
B0278295262
C0159292044
D0197863593

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6579125619.091047%
B6287102116.239860%
C659140.060689%
D6403490.765266%

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 8233 7082 1146 1146 13.92% 16.18%
B 8203 6782 745 745 9.08% 10.98%
C 8244 7044 3 3 0.04% 0.04%
D 8234 6902 50 50 0.61% 0.72%

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 7 64 3430910 20412.53 673 655 168.0
A 4 3 25651 148.74 673 655 168.0
A 8 246 22584 130.49 673 655 168.0
B 2 249 1985136 14154.81 651 627 140.2
B 10 128 1378275 9826.29 651 627 140.2
B 5 185 44286 311.4 651 627 140.2
C 12 252 74441 376.63 717 709 195.8
C 9 237 52131 262.66 717 709 195.8
C 6 223 35290 176.64 717 709 195.8
D 8 160 334272 1707.76 694 665 195.3
D 3 224 211455 1079.05 694 665 195.3
D 8 240 165727 844.96 694 665 195.3

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