ASTROSAT CZTI

Data Quality Report

Orbit 35452

Creation date: 2022-04-21T00:01:37.784574
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/AS1A11_068T03_9000005076_35452cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35452cztM0_level2_quad_clean.evt
Size (bytes)481,354,56048,392,640
Size459.1 MB 46.2 MB
Events in quadrant A2,623,130287,159
Events in quadrant B4,796,238274,079
Events in quadrant C3,420,701279,747
Events in quadrant D3,385,557259,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107753
B0176972
C0132022
D0135022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519540.076997%
B51954929.470645%
C51951923.695861%
D51951552.983638%

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 7287 5196 0 0 0.00% 0.00%
B 7287 5196 326 326 4.47% 6.27%
C 7287 5196 143 143 1.96% 2.75%
D 7287 5196 130 130 1.78% 2.50%

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 127860 990.5 637 626 128.5
A 13 6 14996 111.87 637 626 128.5
A 9 143 10439 76.39 637 626 128.5
B 4 251 1379962 11740.07 615 601 117.5
B 5 236 616791 5244.54 615 601 117.5
B 5 172 223182 1894.44 615 601 117.5
C 0 10 644460 4600.99 604 608 139.9
C 15 214 214720 1530.05 604 608 139.9
C 0 207 95476 677.93 604 608 139.9
D 13 249 428680 2873.36 603 586 149.0
D 1 52 215032 1439.36 603 586 149.0
D 7 223 173509 1160.66 603 586 149.0

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