ASTROSAT CZTI

Data Quality Report

Orbit 41903

Creation date: 2024-06-27T22:34:11.702619
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_099T01_9000005716_41903cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41903cztM0_level2_quad_clean.evt
Size (bytes)1,055,911,680244,016,640
Size1007.0 MB 232.7 MB
Events in quadrant A11,453,8591,592,332
Events in quadrant B8,097,4201,677,396
Events in quadrant C8,565,5911,566,880
Events in quadrant D9,762,5391,476,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441674
B0352544
C0354574
D0402514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155899566.132529%
B155893762.411957%
C155895063.245879%
D155894062.604401%

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 19766 15592 641 641 3.24% 4.11%
B 19766 15592 257 257 1.30% 1.65%
C 19766 15592 496 496 2.51% 3.18%
D 19766 15592 382 382 1.93% 2.45%

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 14 24 3752578 11222.67 1637 1602 334.2
A 10 83 1334428 3987.73 1637 1602 334.2
A 13 6 19135 52.46 1637 1602 334.2
B 5 255 1495841 4702.44 1655 1603 317.8
B 12 111 41450 125.4 1655 1603 317.8
B 11 111 38811 117.1 1655 1603 317.8
C 0 10 1639870 4375.71 1602 1607 374.4
C 15 214 605089 1611.87 1602 1607 374.4
C 0 15 64722 168.58 1602 1607 374.4
D 12 79 1334400 3375.36 1616 1572 394.9
D 12 6 743096 1877.9 1616 1572 394.9
D 13 249 577385 1458.24 1616 1572 394.9

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