ASTROSAT CZTI

Data Quality Report

Orbit 24460

Creation date: 2024-06-27T19:06:12.880871
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/AS1T03_183T01_9000003606_24460cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24460cztM0_level2_quad_clean.evt
Size (bytes)3,395,831,040674,101,440
Size3.2 GB 642.9 MB
Events in quadrant A18,560,8654,585,542
Events in quadrant B19,695,4384,636,403
Events in quadrant C27,870,1034,284,351
Events in quadrant D34,035,0924,176,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0822228
B0846017
C01091007
D012901610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08080
B08080
C08080
D08080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A398404381.099398%
B398416801.706784%
C3984131757.969177%
D3984029117.306727%

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 45459 39849 0 0 0.00% 0.00%
B 45460 39850 114 114 0.25% 0.29%
C 45460 39850 1581 1581 3.48% 3.97%
D 45460 39848 2292 2292 5.04% 5.75%

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 4 2 62581 60.41 4801 4696 958.3
A 13 254 59957 57.67 4801 4696 958.3
A 3 137 43632 40.63 4801 4696 958.3
B 5 172 363204 399.86 4779 4653 896.7
B 3 64 287698 315.66 4779 4653 896.7
B 7 202 139254 150.11 4779 4653 896.7
C 2 16 9126260 8811.88 4487 4514 1035.2
C 14 238 716979 688.26 4487 4514 1035.2
C 10 9 341407 325.45 4487 4514 1035.2
D 7 238 6801000 6206.95 4548 4413 1095.0
D 12 218 6014054 5488.28 4548 4413 1095.0
D 1 52 1984225 1808.05 4548 4413 1095.0

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