ASTROSAT CZTI

Data Quality Report

Orbit 20230719_A12_088T51_9000005780_level2

Creation date: 2023-07-26T11:21:10.181405
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_088T51_9000005780cztM0_level2.fits modeM0/AS1A12_088T51_9000005780cztM0_level2_quad_clean.evt
Size (bytes)301,170,240271,912,320
Size287.2 MB 259.3 MB
Events in quadrant A1,797,5901,541,545
Events in quadrant B1,738,8601,550,791
Events in quadrant C1,771,3281,490,451
Events in quadrant D1,517,1221,355,340

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770910
B0715200
C0675510
D0829130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06840
B06840
C06840
D06840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334184231.265785%
B334183210.960560%
C33418280.083787%
D334188512.546532%

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 47973 33417 0 0 0.00% 0.00%
B 47973 33414 0 0 0.00% 0.00%
C 47973 33418 0 0 0.00% 0.00%
D 47973 33405 0 0 0.00% 0.00%

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 9 19 1540 9.15 469 440 120.2
A 0 29 1493 8.76 469 440 120.2
A 7 110 1479 8.64 469 440 120.2
B 2 9 1556 12.33 460 439 90.6
B 3 80 1263 9.1 460 439 90.6
B 3 17 1227 8.7 460 439 90.6
C 1 81 1428 8.14 468 438 121.6
C 1 80 1342 7.44 468 438 121.6
C 1 65 1240 6.6 468 438 121.6
D 7 3 1153 6.45 434 395 117.6
D 6 38 1139 6.33 434 395 117.6
D 4 160 1130 6.25 434 395 117.6

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