ASTROSAT CZTI

Data Quality Report

Orbit 46252

Creation date: 2024-06-27T23:20:52.033571
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/AS1A13_094T02_9000006190_46252cztM0_level2.fits modeM0/AS1A13_094T02_9000006190_46252cztM0_level2_quad_clean.evt
Size (bytes)577,005,12098,294,400
Size550.3 MB 93.7 MB
Events in quadrant A5,663,912661,586
Events in quadrant B3,891,616686,877
Events in quadrant C3,402,122673,982
Events in quadrant D7,903,800505,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206501
B0158121
C0148006
D0279401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64201281.993769%
B64201412.196262%
C64191041.620190%
D6419146522.822870%

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 7270 6420 1 1 0.01% 0.02%
B 7269 6419 67 67 0.92% 1.04%
C 7269 6419 97 97 1.33% 1.51%
D 7268 6418 1504 1504 20.69% 23.43%

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 2982576 21014.87 687 673 141.9
A 13 254 10511 69.33 687 673 141.9
A 3 137 7920 51.07 687 673 141.9
B 3 112 1001824 7439.67 685 664 134.6
B 0 155 50579 370.92 685 664 134.6
B 5 172 39263 286.83 685 664 134.6
C 12 2 326165 2045.52 676 679 159.1
C 14 254 275128 1724.78 676 679 159.1
C 1 3 68945 429.02 676 679 159.1
D 1 52 4849217 30937.8 627 605 156.7
D 2 120 216892 1380.07 627 605 156.7
D 13 249 130432 828.39 627 605 156.7

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