ASTROSAT CZTI

Data Quality Report

Orbit 15305

Creation date: 2024-06-27T17:06:31.246806
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/AS1A04_223T01_9000002258_15305cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15305cztM0_level2_quad_clean.evt
Size (bytes)314,256,96051,618,240
Size299.7 MB 49.2 MB
Events in quadrant A2,157,854313,141
Events in quadrant B2,349,842316,971
Events in quadrant C2,528,090306,665
Events in quadrant D2,159,970294,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096821
B0100761
C0103921
D099651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4713501.060895%
B4713952.015701%
C4713881.867176%
D4713581.230639%

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 5024 4715 0 0 0.00% 0.00%
B 5024 4715 9 9 0.18% 0.19%
C 5024 4715 27 27 0.54% 0.57%
D 5024 4715 19 19 0.38% 0.40%

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 0 226 4915 38.28 560 547 114.1
A 12 194 4227 32.25 560 547 114.1
A 3 137 3875 29.16 560 547 114.1
B 10 16 70824 635.87 561 545 110.5
B 0 189 29388 260.96 561 545 110.5
B 4 48 15557 135.82 561 545 110.5
C 3 233 222623 1750.43 538 540 126.9
C 4 254 203263 1597.84 538 540 126.9
C 10 22 4008 27.33 538 540 126.9
D 7 38 66928 503.73 536 521 131.8
D 2 234 17634 129.81 536 521 131.8
D 5 222 16616 122.09 536 521 131.8

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