ASTROSAT CZTI

Data Quality Report

Orbit 35091

Creation date: 2022-03-29T11:58:02.207918
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/AS1T05_015T01_9000005026_35091cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35091cztM0_level2_quad_clean.evt
Size (bytes)420,517,44091,540,800
Size401.0 MB 87.3 MB
Events in quadrant A2,482,720607,068
Events in quadrant B2,908,293615,603
Events in quadrant C2,904,976613,888
Events in quadrant D4,086,734572,111

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107643
B0119542
C0116632
D0156972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518990.173444%
B51891442.775101%
C5189841.618809%
D51891633.141260%

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 7072 5190 0 0 0.00% 0.00%
B 7072 5190 88 88 1.24% 1.70%
C 7072 5190 56 56 0.79% 1.08%
D 7072 5190 148 148 2.09% 2.85%

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 79184 635.79 612 601 123.6
A 13 6 12900 99.51 612 601 123.6
A 7 16 12738 98.2 612 601 123.6
B 5 172 349109 3005.31 606 590 116.0
B 5 255 125637 1078.29 606 590 116.0
B 12 111 14094 116.45 606 590 116.0
C 15 214 218751 1568.0 599 606 139.1
C 0 10 215174 1542.29 599 606 139.1
C 12 250 53951 383.44 599 606 139.1
D 8 195 780446 5472.67 590 575 142.5
D 13 249 449231 3148.4 590 575 142.5
D 5 223 262731 1839.65 590 575 142.5

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