ASTROSAT CZTI

Data Quality Report

Orbit 42492

Creation date: 2024-06-27T22:40:49.267384
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/AS1C07_001T10_9000005806_42492cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42492cztM0_level2_quad_clean.evt
Size (bytes)366,865,92087,272,640
Size349.9 MB 83.2 MB
Events in quadrant A2,993,776603,225
Events in quadrant B2,938,571589,367
Events in quadrant C2,949,870568,425
Events in quadrant D4,274,299500,726

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121683
B0126442
C0123582
D0166132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5440130.238971%
B5440941.727941%
C5440631.158088%
D544054910.091912%

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 7173 5441 3 3 0.04% 0.06%
B 7173 5441 71 71 0.99% 1.30%
C 7173 5441 48 48 0.67% 0.88%
D 7173 5441 455 455 6.34% 8.36%

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 637264 5447.65 573 560 116.9
A 12 189 108173 920.74 573 560 116.9
A 13 6 17005 140.7 573 560 116.9
B 5 255 460383 4249.47 560 545 108.2
B 0 229 85390 784.07 560 545 108.2
B 5 172 68124 624.51 560 545 108.2
C 14 254 258016 1989.14 553 556 129.4
C 9 54 243532 1877.23 553 556 129.4
C 15 214 229487 1768.72 553 556 129.4
D 12 233 1109435 8477.42 538 523 130.8
D 10 118 634203 4844.36 538 523 130.8
D 13 171 77147 585.78 538 523 130.8

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