ASTROSAT CZTI

Data Quality Report

Orbit 40763

Creation date: 2024-06-27T22:20:09.512186
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_001T10_9000005566_40763cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40763cztM0_level2_quad_clean.evt
Size (bytes)555,212,16077,290,560
Size529.5 MB 73.7 MB
Events in quadrant A2,709,625602,659
Events in quadrant B2,329,089631,926
Events in quadrant C8,064,111418,482
Events in quadrant D7,056,477333,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112193
B0103852
C0275062
D0244592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5052100.197941%
B505290.178147%
C5052193038.202692%
D5052225444.615994%

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 6994 5053 6 6 0.09% 0.12%
B 6994 5053 2 2 0.03% 0.04%
C 6993 5051 2009 2009 28.73% 39.77%
D 6993 5051 1580 1580 22.59% 31.28%

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 468598 4103.52 560 552 114.1
A 13 248 23229 198.82 560 552 114.1
A 6 10 21785 186.16 560 552 114.1
B 0 229 74372 683.32 568 552 108.0
B 4 171 19283 173.38 568 552 108.0
B 12 111 13394 118.87 568 552 108.0
C 9 187 5883716 54088.98 472 476 108.8
C 15 214 185471 1700.8 472 476 108.8
C 0 10 106497 974.73 472 476 108.8
D 13 249 2976582 27304.27 444 432 109.0
D 12 227 1841637 16891.88 444 432 109.0
D 2 249 166281 1521.56 444 432 109.0

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