ASTROSAT CZTI

Data Quality Report

Orbit 25683

Creation date: 2024-06-27T19:20:22.247064
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/AS1A09_043T01_9000003744_25683cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25683cztM0_level2_quad_clean.evt
Size (bytes)656,798,40096,816,960
Size626.4 MB 92.3 MB
Events in quadrant A5,109,410596,184
Events in quadrant B4,310,357605,511
Events in quadrant C4,314,294572,700
Events in quadrant D5,574,242560,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202900
B0180870
C0181850
D0219420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85904885.681024%
B85913393.945990%
C85913604.190432%
D85913814.434874%

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 9040 8590 78 78 0.86% 0.91%
B 9041 8593 0 0 0.00% 0.00%
C 9041 8593 6 6 0.07% 0.07%
D 9041 8593 74 74 0.82% 0.86%

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 13 623945 2845.88 1079 1057 218.9
A 8 192 317069 1443.81 1079 1057 218.9
A 13 254 12243 51.11 1079 1057 218.9
B 3 112 33124 150.71 1084 1055 212.8
B 12 111 26716 120.6 1084 1055 212.8
B 11 111 23950 107.6 1084 1055 212.8
C 14 238 162873 655.62 1042 1048 246.8
C 14 225 83214 332.89 1042 1048 246.8
C 3 233 7795 27.33 1042 1048 246.8
D 1 52 953468 3694.02 1052 1019 257.8
D 8 195 318095 1229.76 1052 1019 257.8
D 13 104 134943 519.42 1052 1019 257.8

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