ASTROSAT CZTI

Data Quality Report

Orbit 07435

Creation date: 2024-06-27T15:19:41.681971
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/AS1A02_150T04_9000001022_07435cztM0_level2.evt modeM0/AS1A02_150T04_9000001022_07435cztM0_level2_quad_clean.evt
Size (bytes)472,034,88071,714,880
Size450.2 MB 68.4 MB
Events in quadrant A3,018,047426,891
Events in quadrant B3,294,535435,518
Events in quadrant C4,320,065432,307
Events in quadrant D3,218,004419,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134314
B0141171
C0173481
D0142091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6557941.433582%
B65581171.784081%
C6558931.418115%
D65581101.677341%

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 6933 6560 0 0 0.00% 0.00%
B 6933 6560 17 17 0.25% 0.26%
C 6933 6560 4 4 0.06% 0.06%
D 6933 6560 45 45 0.65% 0.69%

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 4 2 21884 132.68 769 750 159.3
A 3 1 14516 86.43 769 750 159.3
A 13 14 10192 59.28 769 750 159.3
B 10 245 175294 1160.86 776 754 150.4
B 0 214 74729 492.0 776 754 150.4
B 4 81 29699 192.51 776 754 150.4
C 9 68 1387814 7898.29 748 751 175.6
C 13 61 5837 28.96 748 751 175.6
C 8 128 4863 23.41 748 751 175.6
D 7 55 120913 645.55 751 727 186.2
D 2 14 67975 361.21 751 727 186.2
D 1 52 44664 236.0 751 727 186.2

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