ASTROSAT CZTI

Data Quality Report

Orbit 41129

Creation date: 2024-06-27T22:24:49.814424
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_41129cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41129cztM0_level2_quad_clean.evt
Size (bytes)357,554,88087,618,240
Size341.0 MB 83.6 MB
Events in quadrant A2,814,399604,738
Events in quadrant B3,323,047582,701
Events in quadrant C2,897,091571,190
Events in quadrant D3,798,468532,102

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114053
B0132952
C0118202
D0148832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5171180.348095%
B51713075.936956%
C51711112.146587%
D51712164.177142%

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 7206 5172 2 2 0.03% 0.04%
B 7206 5172 244 244 3.39% 4.72%
C 7206 5172 97 97 1.35% 1.88%
D 7206 5172 182 182 2.53% 3.52%

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 518398 4343.54 584 572 119.2
A 12 189 26850 220.42 584 572 119.2
A 15 235 9606 75.78 584 572 119.2
B 0 245 987374 9098.43 566 551 108.5
B 0 190 42160 383.63 566 551 108.5
B 5 255 34139 309.68 566 551 108.5
C 14 254 251320 1923.12 556 560 130.4
C 0 10 246044 1882.65 556 560 130.4
C 15 214 220501 1686.76 556 560 130.4
D 2 16 728514 5355.48 557 542 135.9
D 13 249 416444 3059.67 557 542 135.9
D 2 249 401353 2948.65 557 542 135.9

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