ASTROSAT CZTI

Data Quality Report

Orbit 18280

Creation date: 2024-06-27T17:47:47.235960
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/AS1A06_006T01_9000002720_18280cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18280cztM0_level2_quad_clean.evt
Size (bytes)543,237,12064,126,080
Size518.1 MB 61.2 MB
Events in quadrant A4,050,314377,333
Events in quadrant B3,416,465390,778
Events in quadrant C3,373,900379,210
Events in quadrant D5,185,906355,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158843
B0138982
C0138442
D0197352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62792403.822265%
B6279821.305940%
C62791081.720019%
D62793575.685619%

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 7574 6280 162 162 2.14% 2.58%
B 7574 6280 2 2 0.03% 0.03%
C 7574 6280 0 0 0.00% 0.00%
D 7574 6280 300 300 3.96% 4.78%

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 15 174 776706 4590.62 851 834 169.0
A 0 226 7418 38.96 851 834 169.0
A 12 194 6066 30.96 851 834 169.0
B 0 244 19676 117.65 863 849 160.0
B 12 111 17727 105.47 863 849 160.0
B 7 220 15416 91.03 863 849 160.0
C 14 238 130411 683.93 828 838 189.5
C 3 233 11544 56.51 828 838 189.5
C 13 61 5851 26.46 828 838 189.5
D 7 238 1505029 7673.56 814 796 196.0
D 1 52 405578 2064.92 814 796 196.0
D 13 168 84643 427.73 814 796 196.0

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