ASTROSAT CZTI

Data Quality Report

Orbit 21384

Creation date: 2024-06-27T18:27:09.510147
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/AS1C04_001T01_9000003156_21384cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21384cztM0_level2_quad_clean.evt
Size (bytes)511,223,040117,256,320
Size487.5 MB 111.8 MB
Events in quadrant A3,517,128777,883
Events in quadrant B3,619,750783,579
Events in quadrant C3,389,165747,472
Events in quadrant D4,458,056731,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152672
B0157902
C0149922
D0182652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7341190.258820%
B7342510.694634%
C7341730.994415%
D73412202.996867%

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 7716 7342 9 9 0.12% 0.12%
B 7717 7343 22 22 0.29% 0.30%
C 7716 7341 0 0 0.00% 0.00%
D 7716 7342 204 204 2.64% 2.78%

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 5 168 129365 741.0 860 840 173.4
A 15 174 55216 313.5 860 840 173.4
A 13 254 12485 67.14 860 840 173.4
B 5 172 72832 440.62 861 838 163.4
B 0 230 45271 271.94 861 838 163.4
B 0 219 31355 186.77 861 838 163.4
C 14 238 129851 662.72 831 835 194.7
C 10 23 12409 59.45 831 835 194.7
C 13 61 5732 25.15 831 835 194.7
D 1 52 814237 4005.43 837 812 203.1
D 12 235 201176 986.62 837 812 203.1
D 1 20 72086 350.96 837 812 203.1

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