ASTROSAT CZTI

Data Quality Report

Orbit 23338

Creation date: 2024-06-27T18:53:00.983186
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/AS1A07_135T02_9000003450_23338cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23338cztM0_level2_quad_clean.evt
Size (bytes)511,649,28083,741,760
Size487.9 MB 79.9 MB
Events in quadrant A3,491,655508,248
Events in quadrant B3,561,197517,903
Events in quadrant C3,672,585507,733
Events in quadrant D4,275,591495,245

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149901
B0151221
C0152751
D0176141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7276710.975811%
B7277981.346709%
C72771522.088773%
D72772253.091933%

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 7536 7277 0 0 0.00% 0.00%
B 7537 7278 0 0 0.00% 0.00%
C 7537 7277 5 5 0.07% 0.07%
D 7537 7278 144 144 1.91% 1.98%

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 11898 59.99 903 884 183.6
A 3 137 8108 39.35 903 884 183.6
A 0 226 7820 37.78 903 884 183.6
B 12 111 21109 116.96 896 872 173.0
B 11 111 18862 103.97 896 872 173.0
B 14 111 16317 89.26 896 872 173.0
C 14 238 136187 661.02 870 877 204.7
C 2 16 42598 203.82 870 877 204.7
C 10 9 40535 193.74 870 877 204.7
D 1 52 657890 3059.18 877 849 214.8
D 12 227 123274 570.01 877 849 214.8
D 7 238 57491 263.72 877 849 214.8

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