ASTROSAT CZTI

Data Quality Report

Orbit 41108

Creation date: 2024-06-27T22:24:34.184472
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_044T19_9000005600_41108cztM0_level2.fits modeM0/AS1A12_044T19_9000005600_41108cztM0_level2_quad_clean.evt
Size (bytes)366,626,88091,396,800
Size349.6 MB 87.2 MB
Events in quadrant A3,029,258634,236
Events in quadrant B3,707,550616,596
Events in quadrant C2,738,550602,886
Events in quadrant D3,674,269534,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121003
B0144252
C0112402
D0147272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5414180.332471%
B54143276.039897%
C5414170.314001%
D54143596.630957%

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 7148 5415 3 3 0.04% 0.06%
B 7148 5415 246 246 3.44% 4.54%
C 7148 5415 9 9 0.13% 0.17%
D 7148 5415 286 286 4.00% 5.28%

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 515526 3956.01 631 618 130.2
A 2 79 45729 346.59 631 618 130.2
A 7 3 12553 91.7 631 618 130.2
B 0 245 991847 8233.68 613 597 120.4
B 0 186 151556 1253.92 613 597 120.4
B 5 255 104165 860.27 613 597 120.4
C 15 214 237213 1662.72 608 610 142.3
C 14 254 45384 314.65 608 610 142.3
C 0 10 43707 302.86 608 610 142.3
D 13 249 770807 5219.21 595 576 147.6
D 2 249 583196 3947.92 595 576 147.6
D 2 234 23987 158.64 595 576 147.6

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