ASTROSAT CZTI

Data Quality Report

Orbit 16612

Creation date: 2024-06-27T17:25:05.824328
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/AS1C04_009T01_9000002448_16612cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16612cztM0_level2_quad_clean.evt
Size (bytes)446,212,80090,504,000
Size425.5 MB 86.3 MB
Events in quadrant A2,436,632621,745
Events in quadrant B2,530,699631,485
Events in quadrant C2,320,864610,331
Events in quadrant D5,890,058530,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106601
B0108291
C0101851
D0208641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4930511.034483%
B4930551.115619%
C4930581.176471%
D4930103420.973631%

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 6021 4932 13 13 0.22% 0.26%
B 6021 4932 3 3 0.05% 0.06%
C 6021 4932 0 0 0.00% 0.00%
D 6021 4932 942 942 15.65% 19.10%

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 15 69 171577 1458.05 572 560 117.3
A 15 174 35595 298.7 572 560 117.3
A 9 143 24389 203.16 572 560 117.3
B 15 35 89886 827.81 573 558 107.9
B 7 220 48818 447.23 573 558 107.9
B 0 198 36321 331.42 573 558 107.9
C 14 238 85039 657.14 552 555 128.6
C 3 233 50718 390.18 552 555 128.6
C 7 247 31629 241.7 552 555 128.6
D 1 52 3824028 31045.53 510 495 123.2
D 10 70 55727 448.46 510 495 123.2
D 12 110 41878 336.01 510 495 123.2

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