ASTROSAT CZTI

Data Quality Report

Orbit 33940

Creation date: 2024-06-27T20:54:21.605458
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/AS1A11_046T03_9000004848_33940cztM0_level2.evt modeM0/AS1A11_046T03_9000004848_33940cztM0_level2_quad_clean.evt
Size (bytes)319,584,96061,963,200
Size304.8 MB 59.1 MB
Events in quadrant A2,019,367395,169
Events in quadrant B2,288,205407,039
Events in quadrant C2,449,198399,626
Events in quadrant D2,622,651366,596

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011426
B011424
C011428
D011420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0333
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113372416
B0128163174
C0124082472
D0152294576

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A441760.135839%
B4382400.912825%
C4481380.848025%
D4208711.687262%

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 8888 5089 0 0 0.00% 0.00%
B 8888 5019 18 18 0.20% 0.36%
C 8888 5088 25 25 0.28% 0.49%
D 8888 4900 35 35 0.39% 0.71%

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 10 83 13271 123.79 513 503 103.1
A 15 169 10687 98.74 513 503 103.1
A 13 6 9200 84.32 513 503 103.1
B 5 172 206180 2123.05 505 492 96.9
B 3 112 39542 403.06 505 492 96.9
B 0 229 12015 118.94 505 492 96.9
C 15 214 196044 1687.67 498 501 115.9
C 0 10 168794 1452.48 498 501 115.9
C 3 233 98557 846.29 498 501 115.9
D 8 195 387298 3380.52 466 454 114.4
D 2 250 173521 1512.38 466 454 114.4
D 13 249 71789 623.38 466 454 114.4

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