ASTROSAT CZTI

Data Quality Report

Orbit 25375

Creation date: 2024-06-27T19:16:57.176929
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_104T01_9000003710_25375cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25375cztM0_level2_quad_clean.evt
Size (bytes)529,467,84074,358,720
Size504.9 MB 70.9 MB
Events in quadrant A3,587,565468,246
Events in quadrant B3,476,266466,372
Events in quadrant C3,436,096440,169
Events in quadrant D5,110,110439,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144420
B0140230
C0137930
D0195540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62651282.043097%
B62661251.994893%
C62661362.170444%
D62653575.698324%

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 7605 6265 2 2 0.03% 0.03%
B 7606 6266 1 1 0.01% 0.02%
C 7606 6266 0 0 0.00% 0.00%
D 7605 6265 238 238 3.13% 3.80%

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 6 16 93400 519.67 902 887 178.0
A 15 173 19118 102.41 902 887 178.0
A 13 254 9205 46.72 902 887 178.0
B 0 190 19788 116.0 880 860 163.2
B 12 111 19168 112.2 880 860 163.2
B 11 111 17110 99.58 880 860 163.2
C 14 238 140476 728.94 843 851 191.5
C 3 233 9921 47.35 843 851 191.5
C 13 61 5955 26.65 843 851 191.5
D 7 238 1226545 5983.66 858 838 204.8
D 8 195 333923 1626.06 858 838 204.8
D 1 52 146897 713.03 858 838 204.8

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