ASTROSAT CZTI

Data Quality Report

Orbit 42343

Creation date: 2024-06-27T22:39:13.827299
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/AS1A12_102T01_9000005798_42343cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42343cztM0_level2_quad_clean.evt
Size (bytes)335,450,88095,938,560
Size319.9 MB 91.5 MB
Events in quadrant A3,061,851665,524
Events in quadrant B2,601,840669,666
Events in quadrant C2,559,998636,406
Events in quadrant D3,784,903566,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123222
B0110873
C0106392
D0146732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5248230.438262%
B5247380.724223%
C524740.076234%
D52472915.546026%

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 7252 5249 6 6 0.08% 0.11%
B 7251 5248 21 21 0.29% 0.40%
C 7251 5248 1 1 0.01% 0.02%
D 7251 5248 273 273 3.76% 5.20%

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 590608 4731.44 615 603 124.7
A 13 248 49393 391.26 615 603 124.7
A 15 223 14314 109.95 615 603 124.7
B 5 172 88114 776.0 603 589 112.8
B 5 255 42063 367.71 603 589 112.8
B 0 230 36214 315.85 603 589 112.8
C 15 214 221092 1591.34 597 602 138.6
C 15 111 6461 42.29 597 602 138.6
C 7 247 4216 26.08 597 602 138.6
D 5 222 414361 2906.33 586 572 142.4
D 15 0 291460 2043.11 586 572 142.4
D 12 233 170776 1195.46 586 572 142.4

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