ASTROSAT CZTI

Data Quality Report

Orbit 02275

Creation date: 2024-06-27T14:15:32.318274
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/AS1T01_058T01_9000000348_02275cztM0_level2.evt modeM0/AS1T01_058T01_9000000348_02275cztM0_level2_quad_clean.evt
Size (bytes)620,386,56074,678,400
Size591.6 MB 71.2 MB
Events in quadrant A3,058,116449,652
Events in quadrant B3,193,477458,273
Events in quadrant C6,858,501441,285
Events in quadrant D5,210,380429,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141412
B0144342
C0252022
D0206632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913390.564154%
B6913410.593085%
C69135548.013887%
D691369210.010126%

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 7618 6913 0 0 0.00% 0.00%
B 7618 6913 1 1 0.01% 0.01%
C 7618 6914 580 580 7.61% 8.39%
D 7618 6913 669 669 8.78% 9.68%

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 33 16931 99.78 790 772 161.9
A 12 194 9027 50.98 790 772 161.9
A 0 226 8597 48.32 790 772 161.9
B 4 185 66984 426.53 799 776 155.2
B 10 244 46272 293.1 799 776 155.2
B 12 111 11490 69.02 799 776 155.2
C 2 53 2265734 12734.97 761 764 177.9
C 5 234 1211846 6809.4 761 764 177.9
C 14 223 383881 2154.11 761 764 177.9
D 12 126 2311380 12911.95 750 729 179.0
D 13 169 22672 122.62 750 729 179.0
D 15 194 14489 76.89 750 729 179.0

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