ASTROSAT CZTI

Data Quality Report

Orbit 39187

Creation date: 2024-06-27T22:01:32.676452
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_054T02_9000005444_39187cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39187cztM0_level2_quad_clean.evt
Size (bytes)526,775,04081,492,480
Size502.4 MB 77.7 MB
Events in quadrant A3,210,801652,119
Events in quadrant B2,450,222663,903
Events in quadrant C2,576,243614,969
Events in quadrant D10,860,738175,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127283
B0105192
C0106172
D0356912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5154951.843229%
B515460.116414%
C515480.155219%
D5154374972.739620%

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 7278 5155 62 62 0.85% 1.20%
B 7278 5155 1 1 0.01% 0.02%
C 7278 5155 4 4 0.05% 0.08%
D 7278 5155 3059 3059 42.03% 59.34%

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 436641 3576.01 607 596 121.9
A 9 143 244421 1999.61 607 596 121.9
A 13 248 146201 1194.11 607 596 121.9
B 0 213 64998 562.13 599 584 114.6
B 5 172 24763 211.01 599 584 114.6
B 5 184 15316 128.56 599 584 114.6
C 15 214 218209 1623.37 584 590 134.1
C 9 187 55248 407.73 584 590 134.1
C 15 208 9320 65.12 584 590 134.1
D 12 235 8803357 89620.05 402 391 98.2
D 2 249 137492 1395.78 402 391 98.2
D 5 222 78253 792.69 402 391 98.2

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