ASTROSAT CZTI

Data Quality Report

Orbit 01201

Creation date: 2024-06-27T14:09:03.158852
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/AS1G04_007T02_9000000220_01201cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01201cztM0_level2_quad_clean.evt
Size (bytes)853,842,24088,620,480
Size814.3 MB 84.5 MB
Events in quadrant A6,523,447589,268
Events in quadrant B6,781,722591,067
Events in quadrant C6,427,370561,893
Events in quadrant D5,760,167556,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023511219
B024260231
C023175197
D021212144

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01142
C01142
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497110.200109%
B5496300.545852%
C549960.109111%
D551020.036298%

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 6804 5514 171 171 2.51% 3.10%
B 6803 5510 205 205 3.01% 3.72%
C 6804 5523 152 152 2.23% 2.75%
D 6803 5523 93 93 1.37% 1.68%

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 12 243 15239 33.56 1694 1707 403.2
A 11 79 7354 14.01 1694 1707 403.2
A 4 32 6015 10.68 1694 1707 403.2
B 7 221 52004 123.55 1743 1751 406.7
B 5 191 31507 73.16 1743 1751 406.7
B 6 53 26172 60.04 1743 1751 406.7
C 15 241 287539 667.61 1554 1602 428.3
C 3 111 20098 43.18 1554 1602 428.3
C 3 79 19607 42.04 1554 1602 428.3
D 13 205 12239 22.5 1530 1584 473.5
D 2 16 12172 22.36 1530 1584 473.5
D 10 84 11760 21.49 1530 1584 473.5

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