ASTROSAT CZTI

Data Quality Report

Orbit 26556

Creation date: 2024-06-27T19:30:26.047380
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_220T01_9000003842_26556cztM0_level2.evt modeM0/AS1T03_220T01_9000003842_26556cztM0_level2_quad_clean.evt
Size (bytes)562,651,20085,962,240
Size536.6 MB 82.0 MB
Events in quadrant A2,791,043569,962
Events in quadrant B2,859,173581,853
Events in quadrant C4,388,230534,978
Events in quadrant D6,601,560503,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119750
B0121610
C0165880
D0237960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906490.829665%
B5907510.863382%
C590764310.885390%
D5907113419.197562%

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 6826 5906 0 0 0.00% 0.00%
B 6827 5907 1 1 0.01% 0.02%
C 6827 5907 442 442 6.47% 7.48%
D 6827 5907 971 971 14.22% 16.44%

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 19262 129.11 713 699 143.8
A 5 168 19122 128.14 713 699 143.8
A 13 254 9894 63.95 713 699 143.8
B 14 207 20121 144.67 705 686 134.3
B 3 64 17470 124.94 705 686 134.3
B 12 111 16361 116.68 705 686 134.3
C 4 254 1518774 10049.1 649 653 151.1
C 3 233 220334 1454.16 649 653 151.1
C 14 238 103605 681.48 649 653 151.1
D 7 80 3184770 21144.48 633 617 150.6
D 1 52 767065 5089.62 633 617 150.6
D 2 250 134423 888.54 633 617 150.6

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