ASTROSAT CZTI

Data Quality Report

Orbit 54289

Creation date: 2025-10-11T01:09:45.946600
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_126T15_9000006516_54289cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54289cztM0_level2_quad_clean.evt
Size (bytes)506,747,520102,911,040
Size483.3 MB 98.1 MB
Events in quadrant A4,788,520641,606
Events in quadrant B3,908,106734,879
Events in quadrant C3,931,499629,891
Events in quadrant D5,559,838598,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01470
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019962312
B017148113
C017490191
D021709191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73366278.546892%
B7345720.980259%
C73223084.206501%
D73322643.600655%

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 7412 7389 578 578 7.80% 7.82%
B 7412 7377 53 53 0.72% 0.72%
C 7413 7362 320 320 4.32% 4.35%
D 7412 7381 280 280 3.78% 3.79%

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 29 1535713 8375.94 736 718 183.3
A 3 130 203461 1106.3 736 718 183.3
A 15 174 44097 236.7 736 718 183.3
B 7 0 250536 1533.92 757 730 162.9
B 5 172 205473 1257.22 757 730 162.9
B 10 247 203707 1246.37 757 730 162.9
C 1 241 852172 4257.83 733 728 200.0
C 14 254 84610 419.47 733 728 200.0
C 15 189 47151 232.15 733 728 200.0
D 8 176 1054654 5084.27 735 702 207.3
D 2 172 570682 2749.59 735 702 207.3
D 2 153 443682 2136.94 735 702 207.3

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