ASTROSAT CZTI

Data Quality Report

Orbit 22644

Creation date: 2024-06-27T18:44:00.684644
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/AS1A08_007T01_9000003362_22644cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22644cztM0_level2_quad_clean.evt
Size (bytes)504,820,800108,884,160
Size481.4 MB 103.8 MB
Events in quadrant A3,587,975703,732
Events in quadrant B3,967,337709,905
Events in quadrant C3,623,545683,408
Events in quadrant D3,595,871674,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157013
B0169172
C0157192
D0160492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7561280.370321%
B7561771.018384%
C75611221.613543%
D7561440.581934%

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 8031 7563 2 2 0.02% 0.03%
B 8031 7563 9 9 0.11% 0.12%
C 8031 7563 26 26 0.32% 0.34%
D 8031 7563 20 20 0.25% 0.26%

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 11 47 88216 484.23 895 875 180.4
A 13 170 44298 240.74 895 875 180.4
A 13 254 13022 67.34 895 875 180.4
B 0 229 207651 1219.63 897 874 169.5
B 0 219 90959 531.35 897 874 169.5
B 0 190 43274 250.09 897 874 169.5
C 14 238 136395 666.92 864 869 203.2
C 10 22 97677 476.39 864 869 203.2
C 13 61 6082 25.65 864 869 203.2
D 13 172 75900 352.33 874 846 213.0
D 15 0 74727 346.82 874 846 213.0
D 7 238 51924 239.78 874 846 213.0

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