ASTROSAT CZTI

Data Quality Report

Orbit 34814

Creation date: 2022-03-07T10:02:16.472222
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/AS1C07_005T01_9000004992_34814cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34814cztM0_level2_quad_clean.evt
Size (bytes)477,624,96097,064,640
Size455.5 MB 92.6 MB
Events in quadrant A3,048,685681,681
Events in quadrant B4,673,786584,663
Events in quadrant C2,891,453688,425
Events in quadrant D3,522,273644,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124562
B0167801
C0115271
D0141731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4856110.226524%
B4856107322.096376%
C4856491.009061%
D4856420.864909%

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 6978 4857 2 2 0.03% 0.04%
B 6978 4856 1025 1025 14.69% 21.11%
C 6978 4857 33 33 0.47% 0.68%
D 6978 4857 33 33 0.47% 0.68%

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 0 247 463786 3836.34 608 599 120.7
A 15 169 136340 1124.27 608 599 120.7
A 10 83 37291 303.9 608 599 120.7
B 4 251 2417746 25136.66 517 504 96.2
B 5 172 100419 1039.01 517 504 96.2
B 15 222 52731 543.1 517 504 96.2
C 15 214 223082 1641.16 601 605 135.6
C 14 67 155599 1143.35 601 605 135.6
C 0 10 141771 1041.35 601 605 135.6
D 8 195 845352 5888.6 599 583 143.5
D 2 249 121408 842.23 599 583 143.5
D 12 227 88518 612.97 599 583 143.5

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