ASTROSAT CZTI

Data Quality Report

Orbit 39843

Creation date: 2024-06-27T22:09:27.757896
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_022T01_9000005498_39843cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39843cztM0_level2_quad_clean.evt
Size (bytes)441,820,80094,466,880
Size421.4 MB 90.1 MB
Events in quadrant A3,179,955642,888
Events in quadrant B3,074,394639,404
Events in quadrant C5,817,798598,820
Events in quadrant D3,827,464569,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132993
B0133934
C0214032
D0153342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5862310.528830%
B58611773.019962%
C58623335.680655%
D58621522.592972%

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 7174 5863 14 14 0.20% 0.24%
B 7174 5863 129 129 1.80% 2.20%
C 7174 5863 322 322 4.49% 5.49%
D 7174 5863 165 165 2.30% 2.81%

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 505523 3895.92 632 616 129.6
A 13 248 198966 1530.49 632 616 129.6
A 2 79 10395 75.45 632 616 129.6
B 5 32 326424 2673.38 623 604 121.9
B 4 67 125751 1026.84 623 604 121.9
B 5 172 80199 653.08 623 604 121.9
C 9 187 2421340 17128.59 604 606 141.3
C 15 208 724725 5123.71 604 606 141.3
C 15 214 242686 1712.91 604 606 141.3
D 2 249 691370 4627.55 610 592 149.3
D 7 38 216692 1447.66 610 592 149.3
D 12 233 167862 1120.55 610 592 149.3

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