ASTROSAT CZTI

Data Quality Report

Orbit 32940

Creation date: 2024-06-27T20:43:41.108049
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/AS1C07_005T01_9000004748_32940cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32940cztM0_level2_quad_clean.evt
Size (bytes)2,048,492,160367,338,240
Size1.9 GB 350.3 MB
Events in quadrant A9,266,8522,534,428
Events in quadrant B15,782,3222,436,235
Events in quadrant C9,738,3582,548,477
Events in quadrant D25,876,4512,197,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04180
B04180
C04180
D04180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412326
B0602165
C0429415
D0914195

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20437190.092969%
B2043719889.727455%
C204371400.685032%
D20437368218.016343%

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 26109 20440 5 5 0.02% 0.02%
B 26109 20440 1336 1336 5.12% 6.54%
C 26109 20440 114 114 0.44% 0.56%
D 26109 20440 3372 3372 12.92% 16.50%

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 0 159 84787 175.72 2344 2297 469.4
A 0 191 47194 95.64 2344 2297 469.4
A 13 254 39139 78.48 2344 2297 469.4
B 5 172 4640642 10983.83 2252 2196 422.3
B 5 200 489370 1153.63 2252 2196 422.3
B 0 199 370638 872.47 2252 2196 422.3
C 0 10 589613 1123.74 2274 2289 522.7
C 1 241 98663 184.39 2274 2289 522.7
C 3 233 95267 177.9 2274 2289 522.7
D 8 195 6376444 11822.27 2107 2058 539.2
D 12 227 3036306 5627.47 2107 2058 539.2
D 7 80 2491131 4616.36 2107 2058 539.2

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