ASTROSAT CZTI

Data Quality Report

Orbit 45657

Creation date: 2024-06-27T23:14:39.157283
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/AS1A13_071T07_9000006116_45657cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45657cztM0_level2_quad_clean.evt
Size (bytes)641,652,480151,188,480
Size611.9 MB 144.2 MB
Events in quadrant A7,893,2341,001,831
Events in quadrant B4,829,0841,038,219
Events in quadrant C4,154,675989,372
Events in quadrant D6,137,739888,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303272
B0210272
C0195892
D0249233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95111891.987173%
B95121291.356182%
C9512380.399495%
D95112162.271055%

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 9906 9513 15 15 0.15% 0.16%
B 9907 9514 34 34 0.34% 0.36%
C 9907 9514 15 15 0.15% 0.16%
D 9906 9513 140 140 1.41% 1.47%

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 10 83 3735191 17359.17 1035 1014 215.1
A 13 248 49211 224.05 1035 1014 215.1
A 14 235 48114 218.96 1035 1014 215.1
B 0 190 191575 933.19 1040 1008 204.2
B 5 172 122486 594.87 1040 1008 204.2
B 4 171 111071 538.97 1040 1008 204.2
C 14 254 108830 446.48 1023 1026 241.5
C 2 14 27286 108.76 1023 1026 241.5
C 3 233 24977 99.2 1023 1026 241.5
D 1 52 1392394 5507.67 1008 974 252.6
D 13 249 281953 1112.2 1008 974 252.6
D 13 171 115361 452.78 1008 974 252.6

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