ASTROSAT CZTI

Data Quality Report

Orbit 51281

Creation date: 2025-03-22T11:35:42.662360
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/AS1C07_001T01_9000006454_51281cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51281cztM0_level2_quad_clean.evt
Size (bytes)830,131,20086,564,160
Size791.7 MB 82.6 MB
Events in quadrant A6,582,799618,037
Events in quadrant B4,275,144692,815
Events in quadrant C14,742,488236,214
Events in quadrant D4,587,804587,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244990
B0175100
C0485682
D0187690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69864716.742056%
B69862293.277985%
C6986456665.359290%
D69862413.449757%

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 6986 6986 394 394 5.64% 5.64%
B 6986 6986 193 193 2.76% 2.76%
C 6985 6985 4635 4635 66.36% 66.36%
D 6986 6986 253 253 3.62% 3.62%

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 3 1640301 9395.26 701 684 174.5
A 12 250 898018 5141.86 701 684 174.5
A 3 114 367661 2102.84 701 684 174.5
B 5 185 652378 4340.6 708 684 150.1
B 4 170 207101 1374.84 708 684 150.1
B 10 247 143288 949.81 708 684 150.1
C 4 12 10078210 94902.91 377 373 106.2
C 10 171 1772438 16687.52 377 373 106.2
C 13 49 876010 8245.87 377 373 106.2
D 3 12 314881 1631.43 685 658 192.6
D 2 216 253237 1311.38 685 658 192.6
D 10 181 248264 1285.56 685 658 192.6

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