ASTROSAT CZTI

Data Quality Report

Orbit 36884

Creation date: 2024-06-27T21:32:47.966427
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_075T01_9000005244_36884cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36884cztM0_level2_quad_clean.evt
Size (bytes)338,437,44071,199,360
Size322.8 MB 67.9 MB
Events in quadrant A2,434,016609,287
Events in quadrant B731,9639,655
Events in quadrant C2,733,221622,692
Events in quadrant D4,018,154574,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102953
B048912
C0109642
D0152712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4801150.312435%
B48014801100.000000%
C48011242.582795%
D48012044.249115%

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 6924 4802 10 10 0.14% 0.21%
B 6923 4800 0 0 0.00% 0.00%
C 6924 4802 83 83 1.20% 1.73%
D 6924 4802 199 199 2.87% 4.14%

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 220216 1960.44 559 550 112.0
A 13 248 30667 268.78 559 550 112.0
A 13 6 12704 108.47 559 550 112.0
B 12 243 666046 178429.17 10 10 3.7
B 12 144 12392 3317.1 10 10 3.7
B 0 190 4960 1326.09 10 10 3.7
C 0 10 339222 2682.13 553 560 126.3
C 15 214 202215 1597.06 553 560 126.3
C 3 233 18504 142.11 553 560 126.3
D 12 235 1397361 10758.88 541 528 129.8
D 13 171 191382 1470.02 541 528 129.8
D 13 249 108398 830.85 541 528 129.8

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