ASTROSAT CZTI

Data Quality Report

Orbit 50597

Creation date: 2025-02-04T13:37:46.129964
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/AS1T05_239T01_9000006444_50597cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50597cztM0_level2_quad_clean.evt
Size (bytes)487,059,84093,677,760
Size464.5 MB 89.3 MB
Events in quadrant A3,657,969599,465
Events in quadrant B5,762,657633,991
Events in quadrant C3,830,294592,393
Events in quadrant D4,265,684549,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155481
B0217375
C0164381
D0175671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66012163.272231%
B66005277.984848%
C66022483.756437%
D66022643.998788%

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 7521 6602 117 117 1.56% 1.77%
B 7521 6602 289 289 3.84% 4.38%
C 7522 6603 164 164 2.18% 2.48%
D 7522 6603 191 191 2.54% 2.89%

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 12 250 514121 3090.16 681 666 166.2
A 4 3 84059 501.89 681 666 166.2
A 5 240 80261 479.03 681 666 166.2
B 5 172 1223279 8588.41 668 644 142.4
B 4 170 836143 5868.97 668 644 142.4
B 7 0 170630 1194.07 668 644 142.4
C 4 5 462396 2516.17 666 660 183.5
C 15 147 186551 1012.99 666 660 183.5
C 13 3 82135 443.99 666 660 183.5
D 7 96 257106 1430.94 652 630 179.2
D 12 191 247297 1376.21 652 630 179.2
D 2 249 246813 1373.51 652 630 179.2

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