ASTROSAT CZTI

Data Quality Report

Orbit 18599

Creation date: 2024-06-27T17:52:10.995590
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/AS1A05_075T06_9000002766_18599cztM0_level2.evt modeM0/AS1A05_075T06_9000002766_18599cztM0_level2_quad_clean.evt
Size (bytes)489,168,00098,441,280
Size466.5 MB 93.9 MB
Events in quadrant A3,419,400637,265
Events in quadrant B3,533,219654,230
Events in quadrant C3,756,729634,104
Events in quadrant D3,681,936620,342

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143172
B0146062
C0154162
D0152952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62451432.289832%
B62461732.769773%
C62462363.778418%
D62461572.513609%

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 8866 6245 0 0 0.00% 0.00%
B 8867 6247 6 6 0.07% 0.10%
C 8867 6247 29 29 0.33% 0.46%
D 8867 6247 30 30 0.34% 0.48%

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 9693 50.04 884 869 176.4
A 0 226 7853 39.6 884 869 176.4
A 12 194 6591 32.45 884 869 176.4
B 0 229 43136 257.7 885 864 164.0
B 12 18 30847 182.78 885 864 164.0
B 12 111 18915 110.04 885 864 164.0
C 14 238 137016 684.69 864 869 198.8
C 9 54 132612 662.54 864 869 198.8
C 3 233 74269 369.13 864 869 198.8
D 7 238 159762 756.81 878 855 210.0
D 5 222 151850 719.13 878 855 210.0
D 1 52 45168 211.05 878 855 210.0

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