ASTROSAT CZTI

Data Quality Report

Orbit 45520

Creation date: 2024-06-27T23:13:05.741616
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/AS1A13_031T01_9000006102_45520cztM0_level2.fits modeM0/AS1A13_031T01_9000006102_45520cztM0_level2_quad_clean.evt
Size (bytes)472,432,320113,227,200
Size450.5 MB 108.0 MB
Events in quadrant A5,872,586744,692
Events in quadrant B3,597,813783,239
Events in quadrant C3,034,664761,026
Events in quadrant D4,449,592661,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226372
B0153672
C0140703
D0180382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68672804.077472%
B68671572.286297%
C6866290.422371%
D68664065.913195%

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 8872 6869 22 22 0.25% 0.32%
B 8872 6869 62 62 0.70% 0.90%
C 8871 6868 1 1 0.01% 0.01%
D 8871 6868 288 288 3.25% 4.19%

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 10 83 2783617 17343.85 769 752 160.5
A 7 3 84911 524.51 769 752 160.5
A 13 248 11629 67.79 769 752 160.5
B 15 201 275264 1805.49 774 750 152.0
B 5 172 101436 662.22 774 750 152.0
B 0 183 45533 294.54 774 750 152.0
C 14 254 13173 68.38 772 774 181.3
C 2 14 12432 64.29 772 774 181.3
C 13 61 5319 25.07 772 774 181.3
D 13 249 737356 3892.26 748 728 189.3
D 1 52 285712 1505.82 748 728 189.3
D 2 249 239745 1262.94 748 728 189.3

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