ASTROSAT CZTI

Data Quality Report

Orbit 22477

Creation date: 2024-06-27T18:41:43.334251
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/AS1A07_144T02_9000003340_22477cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22477cztM0_level2_quad_clean.evt
Size (bytes)490,746,24066,936,960
Size468.0 MB 63.8 MB
Events in quadrant A3,464,531395,240
Events in quadrant B3,595,699402,564
Events in quadrant C3,557,759390,679
Events in quadrant D3,801,134382,722

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145112
B0149952
C0147872
D0157992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526891.363776%
B65261031.578302%
C65251522.329502%
D65251432.191571%

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 7706 6526 0 0 0.00% 0.00%
B 7706 6526 1 1 0.01% 0.02%
C 7705 6525 0 0 0.00% 0.00%
D 7705 6525 59 59 0.77% 0.90%

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 13 254 10715 54.98 898 879 178.9
A 0 226 7770 38.52 898 879 178.9
A 3 137 7186 35.25 898 879 178.9
B 15 33 77488 456.72 891 873 167.7
B 12 111 19403 110.46 891 873 167.7
B 11 111 17415 98.61 891 873 167.7
C 14 238 138936 682.26 874 884 202.3
C 0 10 10381 46.93 874 884 202.3
C 13 61 6295 26.74 874 884 202.3
D 1 52 287278 1320.83 885 860 216.8
D 2 136 120162 550.17 885 860 216.8
D 2 234 28619 128.01 885 860 216.8

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