ASTROSAT CZTI

Data Quality Report

Orbit 35394

Creation date: 2022-04-16T12:26:32.931461
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/AS1A11_099T01_9000005068_35394cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35394cztM0_level2_quad_clean.evt
Size (bytes)768,219,84053,415,360
Size732.6 MB 50.9 MB
Events in quadrant A2,571,224420,303
Events in quadrant B11,176,948114,795
Events in quadrant C3,234,902407,667
Events in quadrant D5,947,414324,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104003
B0365072
C0124442
D0210162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496480.161160%
B4964430586.724416%
C49641853.726833%
D4964134827.155520%

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 7058 4965 2 2 0.03% 0.04%
B 7058 4965 3619 3619 51.28% 72.89%
C 7058 4965 139 139 1.97% 2.80%
D 7058 4965 970 970 13.74% 19.54%

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 123215 964.52 623 611 127.1
A 10 255 18822 143.27 623 611 127.1
A 13 6 16334 123.69 623 611 127.1
B 4 251 8165337 145290.85 289 283 56.2
B 5 14 458014 8144.97 289 283 56.2
B 5 31 415191 7382.97 289 283 56.2
C 0 10 608330 4492.14 584 589 135.3
C 15 214 206972 1525.49 584 589 135.3
C 0 207 75582 554.31 584 589 135.3
D 7 80 2811548 22522.26 505 491 124.8
D 12 233 282698 2261.05 505 491 124.8
D 10 118 158593 1266.72 505 491 124.8

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