ASTROSAT CZTI

Data Quality Report

Orbit 31312

Creation date: 2024-06-27T20:26:31.950382
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/AS1A10_058T08_9000004532_31312cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31312cztM0_level2_quad_clean.evt
Size (bytes)425,707,20043,994,880
Size406.0 MB 42.0 MB
Events in quadrant A2,078,475275,025
Events in quadrant B3,360,636270,302
Events in quadrant C3,817,196247,286
Events in quadrant D3,353,688245,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085741
B0129041
C0143451
D0126371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114018927490538446
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A416670.168027%
B4166511.224196%
C41663408.161306%
D41663137.513202%

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 4166 4166 0 0 0.00% 0.00%
B 4166 4166 15 15 0.36% 0.36%
C 4166 4166 22 22 0.53% 0.53%
D 4166 4166 273 273 6.55% 6.55%

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 13 254 7730 66.84 538 529 107.7
A 3 137 5259 43.91 538 529 107.7
A 0 226 4610 37.88 538 529 107.7
B 6 159 1109704 10994.03 526 513 100.9
B 4 80 166096 1641.22 526 513 100.9
B 12 111 12211 115.95 526 513 100.9
C 3 233 1608834 13779.61 500 505 116.7
C 14 238 131621 1123.36 500 505 116.7
C 14 254 71967 612.26 500 505 116.7
D 1 52 1009201 8369.72 503 491 120.5
D 8 195 320775 2657.54 503 491 120.5
D 12 79 86732 715.58 503 491 120.5

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