ASTROSAT CZTI

Data Quality Report

Orbit 17240

Creation date: 2024-06-27T17:33:59.598086
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_063T01_9000002550_17240cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17240cztM0_level2_quad_clean.evt
Size (bytes)455,523,84089,377,920
Size434.4 MB 85.2 MB
Events in quadrant A3,252,041575,708
Events in quadrant B3,441,564588,485
Events in quadrant C3,355,585558,983
Events in quadrant D3,317,763543,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136262
B0142352
C0137612
D0140642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63051492.363204%
B63061762.790993%
C63061762.790993%
D63061161.839518%

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 8905 6307 3 3 0.03% 0.05%
B 8906 6308 7 7 0.08% 0.11%
C 8906 6308 10 10 0.11% 0.16%
D 8906 6308 20 20 0.22% 0.32%

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 15 174 31567 183.13 833 818 167.9
A 0 23 12438 69.2 833 818 167.9
A 0 226 8148 43.65 833 818 167.9
B 3 209 50540 310.62 837 817 160.1
B 15 35 40351 246.97 837 817 160.1
B 7 220 38718 236.77 837 817 160.1
C 14 238 122313 658.39 794 803 184.6
C 7 220 93810 503.95 794 803 184.6
C 1 16 27730 145.9 794 803 184.6
D 13 189 83600 425.42 800 777 194.7
D 10 70 59326 300.74 800 777 194.7
D 1 52 54468 275.79 800 777 194.7

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