ASTROSAT CZTI

Data Quality Report

Orbit 36200

Creation date: 2022-06-09T06:48:27.497689
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_097T17_9000005170_36200cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36200cztM0_level2_quad_clean.evt
Size (bytes)454,800,96077,561,280
Size433.7 MB 74.0 MB
Events in quadrant A2,834,473501,261
Events in quadrant B3,145,961503,875
Events in quadrant C3,988,769498,505
Events in quadrant D3,446,266475,280

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120393
B0127652
C0151012
D0137092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5275160.303318%
B52752124.018957%
C52753867.317536%
D52752394.530806%

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 7038 5276 1 1 0.01% 0.02%
B 7038 5276 133 133 1.89% 2.52%
C 7038 5276 330 330 4.69% 6.25%
D 7038 5276 191 191 2.71% 3.62%

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 15 223 262168 2148.46 611 598 121.7
A 10 83 172471 1411.71 611 598 121.7
A 8 144 20037 159.67 611 598 121.7
B 5 172 615115 5332.44 603 587 115.2
B 4 171 51288 439.95 603 587 115.2
B 0 245 34963 298.29 603 587 115.2
C 15 208 1133558 8216.04 595 600 137.9
C 15 214 233614 1689.78 595 600 137.9
C 0 10 173571 1254.36 595 600 137.9
D 12 227 440717 3031.1 596 581 145.2
D 12 6 221908 1524.22 596 581 145.2
D 12 233 172019 1180.65 596 581 145.2

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