ASTROSAT CZTI

Data Quality Report

Orbit 31493

Creation date: 2024-06-27T20:29:12.801489
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/AS1T04_028T01_9000004584_31493cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31493cztM0_level2_quad_clean.evt
Size (bytes)2,209,533,120309,133,440
Size2.1 GB 294.8 MB
Events in quadrant A13,203,0001,970,734
Events in quadrant B20,335,5531,945,158
Events in quadrant C13,808,0771,905,633
Events in quadrant D17,873,0191,807,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053014
B053220
C052915
D052913

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0572781823
B0814062859
C0589892082
D0716762172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345
B0333
C0334
D0335

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A252214421.752508%
B251577723.068728%
C252257653.032706%
D2520113025.166462%

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 31435 25336 104 104 0.33% 0.41%
B 31428 25281 197 197 0.63% 0.78%
C 31430 25361 220 220 0.70% 0.87%
D 31430 25330 1124 1124 3.58% 4.44%

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 0 13 1311921 2117.1 3082 3013 618.3
A 13 254 43320 65.19 3082 3013 618.3
A 3 137 31817 46.59 3082 3013 618.3
B 6 159 6956855 11850.38 3037 2954 586.8
B 5 172 633609 1074.72 3037 2954 586.8
B 4 80 180885 303.22 3037 2954 586.8
C 3 233 1013841 1456.51 2944 2960 694.0
C 14 238 471094 674.5 2944 2960 694.0
C 0 10 440402 630.28 2944 2960 694.0
D 8 195 3085022 4426.07 2927 2841 696.4
D 13 249 1558566 2234.05 2927 2841 696.4
D 12 218 1112634 1593.68 2927 2841 696.4

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