ASTROSAT CZTI

Data Quality Report

Orbit 49657

Creation date: 2024-12-05T10:11:10.256321
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/AS1T05_233T01_9000006438_49657cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49657cztM0_level2_quad_clean.evt
Size (bytes)1,058,639,04038,157,120
Size1009.6 MB 36.4 MB
Events in quadrant A11,647,6766,077
Events in quadrant B7,506,380595,812
Events in quadrant C4,273,7082,859
Events in quadrant D15,209,31049,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01420
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394830
B0271280
C0177230
D0499340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70107010100.000000%
B7050189226.836879%
C70777077100.000000%
D69666966100.000000%

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 7155 7009 1554 1554 21.72% 22.17%
B 7157 7089 1689 1689 23.60% 23.83%
C 7155 7076 0 0 0.00% 0.00%
D 7154 6965 5105 5105 71.36% 73.30%

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 99 8358835 289606.07 33 29 28.9
A 10 83 822488 28495.59 33 29 28.9
A 12 50 431715 14956.55 33 29 28.9
B 3 232 2724348 20108.94 633 612 135.4
B 3 216 719483 5307.32 633 612 135.4
B 4 206 552365 4073.51 633 612 135.4
C 4 210 1339469 123835.88 7 6 10.8
C 15 198 518836 47966.81 7 6 10.8
C 15 181 437902 40484.31 7 6 10.8
D 15 184 2957874 44915.59 82 73 65.9
D 15 40 2425177 36826.34 82 73 65.9
D 7 45 1266405 19229.84 82 73 65.9

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