ASTROSAT CZTI

Data Quality Report

Orbit 53453

Creation date: 2025-10-15T20:47:37.900749
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_002T06_9000006496_53453cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53453cztM0_level2_quad_clean.evt
Size (bytes)675,472,32093,280,320
Size644.2 MB 89.0 MB
Events in quadrant A5,170,698623,418
Events in quadrant B4,541,350706,943
Events in quadrant C10,026,321444,459
Events in quadrant D4,737,562574,499

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199775
B0182332
C0344142
D0187472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68096619.707740%
B68093234.743722%
C6809232834.190043%
D68093605.287120%

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 7793 6808 454 454 5.83% 6.67%
B 7794 6809 94 94 1.21% 1.38%
C 7794 6810 1971 1971 25.29% 28.94%
D 7794 6810 248 248 3.18% 3.64%

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 15 174 1490620 8321.87 735 716 179.0
A 3 63 488157 2722.6 735 716 179.0
A 4 249 284165 1583.21 735 716 179.0
B 8 234 934013 5895.81 742 716 158.3
B 4 171 416657 2627.57 742 716 158.3
B 2 249 59560 371.73 742 716 158.3
C 1 241 3501672 21008.5 610 604 166.7
C 15 224 2383777 14300.46 610 604 166.7
C 15 178 789661 4734.81 610 604 166.7
D 3 12 745052 3599.93 725 693 206.8
D 8 176 186585 899.03 725 693 206.8
D 7 70 166645 802.59 725 693 206.8

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