ASTROSAT CZTI

Data Quality Report

Orbit 39869

Creation date: 2024-06-27T22:09:40.303994
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_032T02_9000005500_39869cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39869cztM0_level2_quad_clean.evt
Size (bytes)440,406,72088,070,400
Size420.0 MB 84.0 MB
Events in quadrant A3,480,823600,314
Events in quadrant B4,792,776583,366
Events in quadrant C2,935,826602,047
Events in quadrant D4,675,308504,251

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135956
B0179372
C0119292
D0175222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53761061.971726%
B53774488.331784%
C5377611.134462%
D537762711.660777%

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 7379 5378 72 72 0.98% 1.34%
B 7379 5378 356 356 4.82% 6.62%
C 7379 5378 62 62 0.84% 1.15%
D 7379 5378 526 526 7.13% 9.78%

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 530875 4302.58 599 587 123.2
A 6 10 205045 1658.91 599 587 123.2
A 14 250 188813 1527.2 599 587 123.2
B 4 171 774634 6862.13 583 567 112.8
B 4 170 418585 3705.75 583 567 112.8
B 0 183 395204 3498.47 583 567 112.8
C 14 254 237381 1743.08 584 586 135.8
C 15 214 230413 1691.79 584 586 135.8
C 9 187 132863 973.71 584 586 135.8
D 12 233 749478 5319.03 565 549 140.8
D 13 171 743961 5279.85 565 549 140.8
D 13 249 313024 2219.26 565 549 140.8

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