ASTROSAT CZTI

Data Quality Report

Orbit 41115

Creation date: 2024-06-27T22:24:40.463030
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/AS1A12_052T04_9000005602_41115cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41115cztM0_level2_quad_clean.evt
Size (bytes)340,565,76085,682,880
Size324.8 MB 81.7 MB
Events in quadrant A2,767,590587,314
Events in quadrant B3,411,114568,082
Events in quadrant C2,545,012563,462
Events in quadrant D3,483,432516,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01134053
B01365874
C01082734
D01399458

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5118140.273544%
B51222775.408044%
C5130420.818713%
D51342274.421504%

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 7126 5141 4 4 0.06% 0.08%
B 7126 5142 181 181 2.54% 3.52%
C 7126 5147 36 36 0.51% 0.70%
D 7126 5148 212 212 2.98% 4.12%

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 510341 4401.01 571 560 115.8
A 2 79 18362 153.69 571 560 115.8
A 13 248 14171 117.51 571 560 115.8
B 0 245 1044693 9708.86 556 540 107.5
B 0 186 149048 1380.87 556 540 107.5
B 12 111 13658 121.98 556 540 107.5
C 15 214 223340 1733.22 551 553 128.5
C 0 10 134494 1042.02 551 553 128.5
C 14 254 27865 212.48 551 553 128.5
D 12 217 676509 5003.74 548 532 135.1
D 2 249 534666 3953.79 548 532 135.1
D 2 16 64904 476.5 548 532 135.1

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