ASTROSAT CZTI

Data Quality Report

Orbit 40157

Creation date: 2024-06-27T22:13:02.362632
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/AS1A12_068T02_9000005524_40157cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40157cztM0_level2_quad_clean.evt
Size (bytes)560,295,36068,561,280
Size534.3 MB 65.4 MB
Events in quadrant A2,636,521583,627
Events in quadrant B2,287,380611,493
Events in quadrant C12,976,7137,366
Events in quadrant D2,455,443528,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109003
B0100812
C0420202
D0109842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927120.243556%
B4927130.263852%
C4927488199.066369%
D4927691.400447%

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 7081 4928 5 5 0.07% 0.10%
B 7081 4928 6 6 0.08% 0.12%
C 7080 4926 4874 4874 68.84% 98.94%
D 7080 4927 62 62 0.88% 1.26%

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 435516 3911.91 547 537 111.2
A 2 79 25984 228.85 547 537 111.2
A 6 10 22164 194.5 547 537 111.2
B 5 172 63331 588.87 552 538 106.6
B 0 190 26741 245.73 552 538 106.6
B 0 230 25108 230.42 552 538 106.6
C 9 187 12091406 270720.99 189 191 44.7
C 15 214 78890 1762.06 189 191 44.7
C 14 254 22087 490.25 189 191 44.7
D 12 227 203016 1566.21 530 516 129.3
D 13 249 110058 847.24 530 516 129.3
D 2 250 25801 195.56 530 516 129.3

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