ASTROSAT CZTI

Data Quality Report

Orbit 39516

Creation date: 2024-06-27T22:05:33.649728
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_018T01_9000005488_39516cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39516cztM0_level2_quad_clean.evt
Size (bytes)413,447,04091,661,760
Size394.3 MB 87.4 MB
Events in quadrant A3,420,034620,912
Events in quadrant B2,436,582654,072
Events in quadrant C6,296,182536,339
Events in quadrant D2,719,257575,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136953
B0112232
C0224372
D0120942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55582304.138179%
B5558130.233897%
C555894517.002519%
D5558370.665707%

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 7321 5559 177 177 2.42% 3.18%
B 7321 5559 5 5 0.07% 0.09%
C 7321 5559 899 899 12.28% 16.17%
D 7321 5559 28 28 0.38% 0.50%

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 450653 3644.45 604 592 123.5
A 7 192 322545 2607.07 604 592 123.5
A 6 10 234140 1891.2 604 592 123.5
B 15 85 25171 208.73 613 595 117.7
B 12 111 14540 118.43 613 595 117.7
B 11 111 13345 108.28 613 595 117.7
C 9 187 3803601 29124.83 562 564 130.6
C 15 214 217822 1663.83 562 564 130.6
C 3 110 51974 393.71 562 564 130.6
D 13 249 215762 1465.38 603 586 146.8
D 12 233 44798 301.09 603 586 146.8
D 2 250 40845 274.17 603 586 146.8

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