ASTROSAT CZTI

Data Quality Report

Orbit 35405

Creation date: 2022-09-12T18:28:42.960517
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/AS1T05_022T01_9000005070_35405cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35405cztM0_level2_quad_clean.evt
Size (bytes)593,504,64083,966,400
Size566.0 MB 80.1 MB
Events in quadrant A2,754,912564,644
Events in quadrant B3,889,578573,412
Events in quadrant C3,222,448570,928
Events in quadrant D7,735,369448,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115073
B0151592
C0126212
D0266882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5494130.236622%
B54942724.950855%
C54941142.074991%
D5494183933.472880%

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 7436 5495 1 1 0.01% 0.02%
B 7436 5495 207 207 2.78% 3.77%
C 7436 5495 80 80 1.08% 1.46%
D 7436 5495 1510 1510 20.31% 27.48%

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 126663 932.12 671 659 135.2
A 9 143 21067 150.97 671 659 135.2
A 13 6 13908 98.01 671 659 135.2
B 4 251 604023 4796.61 663 645 125.8
B 5 172 257173 2039.29 663 645 125.8
B 5 236 164276 1300.8 663 645 125.8
C 0 10 374932 2435.15 666 671 153.7
C 15 214 226205 1467.45 666 671 153.7
C 14 67 10513 64.04 666 671 153.7
D 7 80 4686690 35131.83 548 534 133.4
D 1 47 435737 3262.69 548 534 133.4
D 13 249 188724 1410.85 548 534 133.4

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